May 2025
Date | Event | Distance | Location | Description |
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05/17/2025 | 13 Mile Trail Race Top Down | 13.1M | San Jose, CA | The course is point to point. It will be marked with single solid PINK color ribbons tied to clothespins, ORANGE cones, signs and gypsum. |
05/17/2025 | Bishop High Sierra Ultras | 100K, 50M, 55K, 20M, 6K | Bishop, CA | These are high altitude races, with lots of climbing, in the scenic foothills of the Eastern Sierra Nevada. |
05/17/2025 | Byxbee Park Run | 5K | Palo Alto, CA | Byxbee Parkrun is a free, fun and friendly weekly 5K community event. The run starts at 8am. Please come along and join us whatever your pace! |
05/17/2025 | Campus Life 5K | 5K | Fresno, CA | This 5k + Kids Fun Run is for the whole family to enjoy! |
05/17/2025 | Girls on the Run - Silicon Valley | 5K | Los Gatos, CA | Join us for our 5K Celebration at Vasona Park. Our event is about accomplishing a goal and is not timed! |
05/17/2025 | Leigh Longhorn Stampede | 5K | San Jose, CA | Join us for a 5K event through Cambrian neighborhood. Whether you are a walker , a casual jogger, distance runner or just want to cheer on the participants come be a part of our community. |
05/17/2025 | Luc's Run | 10K, 2M | Tuolumne, CA | The scenic race route starts in a community of cheering local residents and proceeds through peaceful pastures with a challenging uphill climb through the historic streets of Tuolumne city. |
05/17/2025 | Mud Factor - Sacramento | 5K | Sacramento, CA | The Mud Factor is a seriously fun 5K Obstacle Run! Giant Cargo Climbs, Water Slides, Epic Mud Crawls and Kidz Family Waves, too! |
05/17/2025 | Napa Wilderness Trail Runs | 40M, 50K, 30K, 13.1M, 10K | Napa, CA | Napa Wilderness Trail Runs at Skyline Park will offer a wide range of trail runs from Ultra distance to a 10k for new trail runners or folks just getting back to the trails. |
05/17/2025 | Pacifica Foothillls Trail Run | 30K, 113.1M, 10K | Pacifica, CA | This event takes place in the San Pedro Valley Park in the surf town of Pacifica. It offers acres and acres of coastal mountain environment. |
05/17/2025 | Run for Amma | 50K, 30K, 10K | Los Gatos, CA | The Run for Amma is an annual event to help raise awareness and money to aid in cutting edge research and treatments for cancer. |
05/17/2025 | Trail Quake Half Marathon | 13.1M, 10K, 5K | Saratoga, CA | The woods are calling! Run through the Redwoods and Pines and say hello to banana slugs! Put you ear to the ground and you can hear distant rumbling. |
05/21/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
05/24/2025 | Armed Forces Half Marathon | 13.1M | Concord, CA | Runners will get an incredible panoramic view of the installation. This part of the course up until now has been strictly off-limits to civilians. |
05/24/2025 | Byxbee Park Run | 5K | Palo Alto, CA | Byxbee Parkrun is a free, fun and friendly weekly 5K community event. The run starts at 8am. Please come along and join us whatever your pace! |
05/24/2025 | Modesto Memorial Classic | 5K, 1M | Modesto, CA | Both courses are scenic, shady loops and are walker friendly. Bring the kids along for the FREE kid's fun run. Pancake breakfast included with paid registration |
05/24/2025 | Placerville Path Memorial Day Run | 13.1M, 15K, 10K, 5K | Placerville, CA | This race on the El Dorado Trail in Placerville is held rain or shine. The path is surrounded with beautiful oak trees, rolling hills and incredible views. |
05/24/2025 | Western States Memorial Weekend Training Runs | 70M | Over the Memorial Day weekend Western States offers three training runs to acquaint runners with the last 70 miles of the Western States course. | |
05/25/2025 | LMJS 4th Sunday Runs | 15K, 10K, 5K | Oakland, CA | Distances offered at these races are 5K (once around the lake), 10K (twice around the lake) and 15K (three times around the lake). |
05/25/2025 | Tilden Tough Ten | 10M | Berkeley, CA | Get ready for the race of a lifetime! A fun and challenging ten mile race in the beautiful Tilden Regional Park that'll test your mettle on both road and trail, with some real lung busting hills. |
05/27/2025 | Yosemite Valley Views 6 Day Stage | 90M | Yosemite, CA | There is no better way for an endurance athlete to experience what this wilderness park has to offer. |
05/28/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
05/31/2025 | Bakersfield Hot Fudge Sundae Run 5K | 5K | Bakersfield, CA | Run a 5K or walk our 2K and earn your hot fudge sundae. Want a little more fun? Join or create a Sundae Team! |
05/31/2025 | Beer City Half | 13.1M, 10K, 5K | San Jose, CA | Join us at Almaden Lake Park for a running and beer celebration with fine regional beers and kombucha to taste at the finish. |
05/31/2025 | Big River Adventure | 10K, 5K | Mendocino, CA | Join us for a unique race experience where you can choose your adventure to run, swim, walk, or paddle your way through the scenic beauty of Mendocino County's Big River. |
05/31/2025 | Byxbee parkrun | 5K | Palo Alto, CA | Every Saturday at 8:00am. |
05/31/2025 | Calero Trail Run | 50K, 25K, 13.1M, 15K, 10K, 5K | San Jose, CA | Beginning at Calero County Park, this trail run has everything! Experience awesome single track, great hills, and dirt paths. |
05/31/2025 | Monterey Spartan Super 10K | 10K | Salinas, CA | There’s nothing mediocre about this middle distance race. The Spartan Super offers the ideal blend between distance and speed. |
05/31/2025 | Rainbow Run 5K | 5K | Visalia, CA | Celebrate Pride Month with the Rainbow Run presented by The Source LGBT+ Center! Join forces with family, friends and colleagues to amplify the fun and impact of the Rainbow Run. |
05/31/2025 | San Jose Half Marathon | 13.1M, 8K | San Jose, CA | Enjoy a flat and fast half marathon course or an 8K, with both courses including the Mariachi Mile! |
05/31/2025 | Sonoma Coast Trail Run | 50K, 26.2M, 30K, 13.1M | Duncan Mills, CA | Presented by SkyBreaker Racing, Sonoma Coast Trail Runs take place on the beautiful trails and fire roads of Sonoma Coast State Park on Northern California's beautiful coastline. |
05/31/2025 | Wildcat Half Marathon | 13.1M, 10K, 5K | El Sobrante, CA | Plan your weekend and pack your camera! Hills and more hills! Views of San Francisco, the Golden Gate Bridge, Alcatraz, Mount Tamalpais, the Bay and the ocean await you! |
June 2025
Date | Event | Distance | Location | Description |
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06/01/2025 | Cinderella Trail Run | 50K, 26.2M, 30K, 13.1M, 5M | Oakland, CA | The course travels through beautiful Redwood Regional Park. |
06/01/2025 | Hot Fudge Sundae Run | 5K | Fresno, CA | Run or Walk our 5k or 2m courses and earn your Hot Fudge Sundae! Want a little more fun? |
06/01/2025 | Lake Chabot Trail Challenge | 13.1M, 5K | Castro Valley, CA | The half marathon course is a scenic, hilly loop, mainly on dirt fire roads. |
06/01/2025 | Lighthouse 5K | 5K | Santa Margarita, CA | Get ready to lace up your running shoes and join us for a fun-filled event that’s all about making a positive impact in our community! |
06/01/2025 | Pioneer Day Fun Run | 5K | Meadow Vista, CA | A 5k Fun Run and Walk through Meadow Vista to kick off Pioneer Day and help support the Colfax High School Cross Country Team! Let's get our summer started!!! |
06/01/2025 | Spartan Trail - Monterey | 50K, 13.1M, 10K | Salinas, CA | This race is held within a classic Spartan OCR festival weekend. |
06/01/2025 | Statuto Race | 8K | San Francisco, CA | The Statuto Race commemorates the creation of the first Italian Constitution (Statuto Albertino) and is a running tradition in San Francisco. |
06/01/2025 | Tail Wagger 5K | 5K, 1M | Tahoe Vista, CA | The Tail Wagger 5K and 1 Mile course feature the trails at the North Tahoe Regional Park. |
06/01/2025 | Women's Fitness Festival | 10K, 5K | Sacramento, CA | This is a one-of-a-kind all women’s event that includes medals and a beautiful race tee for 5K/10K finishers. |
06/04/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
06/06/2025 | USS Hornet Twilight 5K | 5K | Alameda, CA | Join us for a unique evening run around beautiful Alameda Point. Runners will start and finish under the historic USS Hornet museum. |
06/07/2025 | Byxbee parkrun | 5K | Palo Alto, CA | Every Saturday at 8:00am. |
06/07/2025 | China Camp Trail Run | 13.1M, 10K, 5K | San Rafael, CA | An extensive trail network will greet you with views of Mt. Tam, San Pablo Bay, and San Francisco Bay as you traverse twisting single-track trails, climbing up and over the peak. |
06/07/2025 | DeCelle Memorial Lake Tahoe Relay | 72M | South Lake Tahoe, CA | The Lake Tahoe Relay teams consist of 7 people, each running approximately 8 to 12 miles. |
06/07/2025 | Impala Stampede | 5K | San Francisco, CA | The Impala Stampede is a fun and exciting 5K/Kids’ Mile/Tots’ 400m race* that the Impalas hold in Golden Gate Park every spring. |
06/07/2025 | Mt. Umunhum Ultras | 100K, 50M, 50K, 26.2M, 30K, 13.1M, 9M, 10K, 5K | San Jose, CA | It is with great excitement that we present the trail running community with an exclusive trail racing event – the Mt. Umunhum Ultras! |
06/07/2025 | Poverello House Run for Meals | 5K, 2M | Fresno, CA | Join us at Woodward Park at Sunset View Shelter to support the work Poverello House provides to those in need. |
06/07/2025 | Redding Health Expo Run | 5K | Redding, CA | Start line is on the west side of civic on road. |
06/07/2025 | SF Half Day | 24H, 12H, 6H, 30M | San Francisco, CA | Run as far as you can or as little as you want. Sign up individually or as a team! |
06/08/2025 |
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5K, 10K | San Francisco, CA | Join us at Fort Point Beer Company's Valencia Street location! Our brewery runs start at a local brew house and work their way through city streets before ending back at the host watering hole for a post run social and raffle! Save $5 with coupon code SWEAT |
06/08/2025 | Dashing for Donuts | 5K | El Dorado, CA | The race will be on a paved trail and downhill to the middle of the Weber Creek Bridge and then you go back up. Once you're finished, you get a donut and a medal. |
06/08/2025 | Dipsea Race | 7.4M | Mill Valley, CA | First run in 1905, the Dipsea is the oldest trail race in America. It is run every year on the second Sunday in June. |
06/08/2025 | Presidio Wall 5K | 5K | San Francisco, CA | Start and finish on the grass lawn adjacent to Presidio Wall Playground. |
06/08/2025 | VI TRI 5K Run | 5K | Visalia, CA | Come out and have some fun! |
06/11/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
06/13/2025 | Tahoe 200 | 200M | Lake Tahoe, CA | The Tahoe 200 is an incredible journey around the largest alpine lake in North America. |
06/14/2025 | Byxbee parkrun | 5K | Palo Alto, CA | Every Saturday at 8:00am. |
06/14/2025 | Cool Moon Trail Runs | 100M, 100K, 50M, 25M | Cool, CA | The Heat 100-Mile Endurance Run of Northern California. |
06/14/2025 | Juneteenth Freedom Run/Walk | 5K, 2.5M | Fresno, CA | The Juneteenth Freedom 5K/5 Mile Run is an event that goes beyond just a race. |
06/14/2025 | Muddy Dash - Sacramento | 5K | Sacramento, CA | You can generally expect a couple of miles of mud, walls, ropes, monkey bars, and multiple other examples of anything we are able to fit into the unique terrain of each venue we visit. |
06/14/2025 | Olympic Valley Half Marathon | 13.1M, 8M | Olympic Valley, CA | This is great course featuring epic valley and peak views and the Truckee River corridor. Start and Finish in the Village At Palisades Tahoe. |
06/15/2025 | Father's Day Rainbow Falls 5K | 5K | San Francisco, CA | Start/Finish: JFK Dr. & Transverse Dr. |
06/15/2025 | Father's Day Run | 10K, 2M | Fresno, CA | Please join us for our annual FATHER'S Day Run to honor your Dad! Lets celebrate ALL dads! Run our 10k or 2 mile run/walk. |
06/15/2025 | Paul Anderson Memorial 5K | 5K | Bakersfield, CA | This event is in remembrance of our friend Paul Anderson (Andy Noise). |
06/18/2025 | Fog City Run | 5K | San Francisco, CA | The Fog City Route is a hilly 5k (ish) run through the Marina Neighborhood and the Presidio. |
06/21/2025 | Angel Island | 13.1M, 5M | Marin County, CA | Come join us and be a part of this event in a hidden gem right around the corner from everyone in the Bay Area. |
06/21/2025 | Bizz Johnson's Southside Scramble | 22K, 14K, 7K | Susanville, CA | This amazing new trail race showcases the best of the Susan River Canyon! |
06/21/2025 | Byxbee parkrun | 5K | Palo Alto, CA | TBD. Every Saturday at 8:00am. |
06/21/2025 | Golden State Trail Run | 50K, 35K, 13.1M, 10K | Monterey, CA | The Golden State 50K/35K/Half Marathon/10K is our premier summer event, traversing the fabulous trails of Fort Ord National Monument. |
06/21/2025 | Headwaters Trail Run | 56K, 31K, 10K | Mount Shasta, CA | These three scenic trail runs are named after the headwaters of the Sacramento River. |
06/21/2025 | San Francisco FrontRunners Pride Run | 10K, 5K | San Francisco, CA | TBD. Our annual Pride Run which features a 5K, 10K, and Kids’ Dash, is an exciting, healthy, and family friendly way for us to engage with our community during Pride Month and raise money for a local beneficiary that aligns with our mission. |
06/21/2025 | Silicon Valley PRIDE 5K | 5K | San Jose, CA | A 5K, where you can walk, jog, run or sashay your way to the finish line. |
06/22/2025 | Huntington Lake Triathlon, 5k & 10k | 10K, 5K | Lakeshore, CA | The Huntington Lake Triathlon is a fun and challenging race in an incredible location in Lakeshore, CA near the China Peak Resort. |
06/22/2025 | LMJS Fourth Sunday Race - June | 5K, 10K, 5K | Oakland, CA | TBD. All of LMJS Fourth Sunday runs begin at 9:00 a.m. at Adams Point, just before the Sailboat House, rain or shine. |
06/22/2025 | Twin Peaks 4M | 4M | San Francisco, CA | Challenging 4 mile loop around Twin Peaks with spectacular views. |
06/25/2025 | Fog City Run | 5K | San Francisco, CA | The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio. |
06/28/2025 | Byxbee Park Run | 5K | Palo Alto, CA | Byxbee Park Run takes place every Saturday at 8:00am. Please come along and join in whatever your pace! |
06/28/2025 | Stars and Strides 5K/10K | 10K, 5K | San Jose, CA | Fun, family-friendly activities. |
06/28/2025 | Western States Endurance Run | 100M | Squaw Valley, CA | TBD. The Western States 100-Mile Endurance Run is the world’s oldest and most prestigious 100-mile trail race. |
06/29/2025 | Burton Creek Trail Run | 13.1M, 12K, 6K | Tahoe City, CA | The Burton Creek Trail Run takes place on a beautiful, fun and challenging trail system within Burton Creek State Park near Tahoe City, CA. |
06/29/2025 | Lindley Meadow 5K | 5K | San Francisco, CA | Double 1.55-mile cross country loop traversing grass, dirt, trails. |
06/29/2025 | Mare Island Half Marathon | 13.1M, 10K, 5K | Vallejo, CA | Our Half Marathon course will take you along the historic naval yard to the highest point of Mare Island for beautiful views of the Bay, Mt. Diablo, and Mt. Tamalpais. |
July 2025
Date | Event | Distance | Location | Description |
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07/02/2025 | Fog City Run | 5K | San Francisco, CA | The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio. |
07/04/2025 | Alameda July 4th Parade R.A.C.E. | 5K | Alameda, CA | Join us for a 5K run (3.1 mile) and walk through beautiful Alameda starting at 9:00AM, just before the historic 4th of July Parade. |
07/04/2025 | Bay 2 Bankers | 10K, 5K | San Francisco, CA | We have yet another never-been-done-before mystery theme celebrating the classic vibes of San Francisco. |
07/04/2025 | Chester Classic 4th of July Fun Run | 1M | Chester, CA | This is a one mile run/walk down Chester's historic Main Street. This event is open to participants of all ages and abilities. |
07/04/2025 | Folsom Firecracker | 10K, 5K, 2M | Folsom, CA | Join us for the Annual Folsom Firecracker. It is a great way to kick off Independence Day. |
07/04/2025 | Great American Race | 10K, 5K | Visalia,CA | Welcome to the annual Great American Race. Let's kick off the 4th of July with a run/walk and Costume Contest! |
07/04/2025 | Run to the Beach | 10K, 5K | Lake Tahoe, CA | Run, walk or stroll the July 4th 5K or 10K course. Starting at the North Tahoe Regional Park the courses offer scenic and fun trails. |
07/04/2025 | Santa Cruz Firecracker | 10K, 5K | Santa Cruz, CA | The race is always held on July 4th in the morning! What a great way to kick off a holiday celebration of our nation's Independence Day. |
07/04/2025 | Stars and Stripes 5K | 5K | Concord, CA | Help make this 4th of July running party even better by inviting your friends, family and neighbors. |
07/05/2025 | Byxbee Park Run | 5K | Palo Alto, CA | Byxbee Park Run takes place every Saturday at 8:00am. Please come along and join in whatever your pace! |
07/05/2025 | Rancho Hills Trail Run | 50K, 24M, 13.1M, 9M, 10K, 5K, 1M | Morgan Hill, CA | Set in Rancho Canada del Oro Open Space Preserve the course is 60% dirt roads and 40% single track. |
07/06/2025 | Yosemite Tuolumne Meadow Run | 98M, 40M | Tuolumne, CA | An impressive network of trails weaves seamlessly through high passes, topaz lakes and cascading rivers. |
07/07/2025 | Badwater 135 | 135M | Lone Pine, CA | Covering 135 miles non-stop from Death Valley to Mt. Whitney, CA, the STYR Labs Badwater® 135 is the most demanding and extreme running race offered anywhere on the planet. |
07/09/2025 | Fog City Run | 5K | San Francisco, CA | The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio. |
07/12/2025 | Byxbee Park Run | 5K | Palo Alto, CA | Byxbee Park Run takes place every Saturday at 8:00am. Please come along and join in whatever your pace! |
07/12/2025 | Davis Moonlight Race | 10M, 10K, 5K | Davis, CA | This is a fun and festive evening event with an energetic atmosphere and great running/walking routes. |
07/12/2025 | Dirty Dozen and Half Dozen Endurance Run | 12H, 6H, 3H | Pinole, CA | Join us at Point Pinole Regional Shoreline for a different kind of race! From 7:00 am to 7:00 pm, the running party won't stop with 12 hour, 6 hour and 3 hour races going on. |
07/12/2025 | Lookin' for a Cure | 5K | Palo Alto, CA | Lace up your sneakers and make your mark in the fight against ocular melanoma! This heart-pumping event kicks off bright and early. |
07/12/2025 | Muir Woods Mountain Challenge | 30K, 13.1M, 10K | Stinson Beach, CA | The Muir Woods Mountain Challenge (formerly Table Rock) is a true competition for event-experienced and novice mountain runners alike. |
07/12/2025 | Salt Point Trail Run | 50K, 26K, 15K, 9K | Jenner, CA | The Salt Point Trail Run provides a festive atmosphere for all to celebrate. These pristine and historic trails should be on every trail runner and ultra-marathoner bucket list. |
07/12/2025 | San Lorenzo River Trail Run | 50K, 26.2M, 30K, 13.1M, 10K | Santa Cruz, CA | Run through 300 foot tall, 1500 year-old Coastal Redwoods, lush stream canyons, open meadows, pine and oak forests, and high dry chaparral-covered ridges. |
07/13/2025 | Patagonia 5K | 5K, 1M | San Francisco, CA | Join Patagonia San Francisco & Excelsior Running Club for a 5K around Blue Heron Lake. The rolling course runs through Golden Gate Park. |
07/16/2025 | Fog City Run | 5K | San Francisco, CA | The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio. |
07/19/2025 | Bad Bass Half Marathon | 13.1M, 10K, 5K | Castro Valley, CA | Whatever the Bad Bass is doing here, we hope you'll join us for fun at beautiful Lake Chabot Marina in Castro Valley. |
07/19/2025 | Byxbee Park Run | 5K | Palo Alto, CA | Byxbee Park Run takes place every Saturday at 8:00am. Please come along and join in whatever your pace! |
07/19/2025 | Christmas in July 5K | 5K | Fresno, CA | Run with Santa Claus down shaded Christmas Tree Lane in JULY! YEP!! HoHoHo! No Joke! Join Santa in July and see what he has in store for you! |
07/19/2025 | Napa to Sonoma Wine Country Rose 5K | 5K | Napa, CA | Start your destination weekend off with a very special 5K on Saturday morning. |
07/20/2025 | Big Chief 50K | 50K | Truckee, CA | The Big Chief 50K trail race is a loop course on a mix of single track and fire roads in the scenic forests between Lake Tahoe and Truckee. |
07/20/2025 | Blood, Sweat & Beers | 10.5M, 5.9M | Auburn, CA | The Blood, Sweat and Beers Trail Run is nestled in the American River Canyon. The course has rocks, roots, lot’s of dirt, hills, and wildlife. |
07/20/2025 | Napa to Sonoma Wine Country Half Marathon | 13.1M | Napa, CA | This popular race features a fast and scenic course starting at the winery and finishing in historic Sonoma Plaza. |
07/20/2025 | Tahoe Trail Run | 50K, 10K | Tahoe, CA | Each race option offers stunning views, rocky summits and breathtaking pine forests in every direction. |
07/23/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
07/26/2025 | Byxbee Park Run | 5K | Palo Alto, CA | Byxbee Park Run takes place every Saturday at 8:00am. Please come along and join in whatever your pace! |
07/26/2025 | Calero Hills Trail Fest | 26.2M, 30K, 133.1M, 10M, 10K, 5K | San Jose, CA | This trail has everything! Experience awesome single track, great hills and dirt paths. |
07/26/2025 | Lost Sierra Endurance Race | 100K, 50K, 25K | Downieville, CA | This is a thrilling endurance experience set against the stunning backdrop of the Sierra Buttes in Downieville. |
07/26/2025 | Miguel Reyes Elite Fun 5K | 5K | Fresno, CA | A FUN competitive race in memory of a great person, runner and friend, Miguel Reyes from Fresno. Join his family, friends and coworkers in the 5K. |
07/26/2025 | San Francisco 5K | 5K | San Francisco, CA | The 5K Waterfront Race features a flat, fast course that is perfect for racing with friends or walking with a stroller or family dog. |
07/26/2025 | San Francisco Ultramarathon | 52.4M | San Francisco, CA | Running two marathons in San Francisco is a challege for the bold. Along the way you will take in breathtaking views of the Golden Gate Bridge, the San Francisco Bay anf Fisherman's Wharf . |
07/26/2025 | The Great Shasta Rail Trail | 50K, 30K, 10K | McCloud, CA | This is a relatively flat course with very nice footing. All distances are out and back. Beautiful crisp mountain air surrounds incredible views. |
07/27/2025 | LMJS Fourth Sunday Race - July | 15K, 10K, 5K | Oakland, CA | The Fourth Sunday Runs are held every month (except March and June) on the fourth Sunday of the month. |
07/27/2025 | Pear Fair Run | 10M, 5M | Courtland, CA | Join us on the last Saturday of July at the Pear Fair! We want you to celebrate the Bartlett Pear Harvest by running with us! |
07/27/2025 | San Francisco Marathon | 26.2M, 13.1M, 5K | San Francisco, CA | A running tour of everything San Francisco - Fisherman's Wharf, Golden Gate Bridge and Park, Haight Street, The Mission and AT&T Park. |
07/30/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
August 2025
Date | Event | Distance | Location | Description |
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08/02/2025 | Byxbee parkrun | 5K | Palo Alto, CA | It is a 5km run - it's you against the clock. |
08/02/2025 | Guadalupe River Find-Your-Way 5K, 10K | 10K, 5K | San Jose, CA | Choose between a 5K and 10K challenge where you find up to 30 checkpoints. |
08/02/2025 | Hell of a Half Marathon | 13.1M | Exeter, CA | Yes the course is challenging, the weather is hot, but what else would you expect at The Hell of Half Marathon? |
08/02/2025 | Point Mariah Trail Marathon | 26.2M | Soda Springs, CA | Point Mariah offers expansive views of the Granite Chief Wilderness, the Pacific Crest Trail. |
08/02/2025 | Summer Breeze Half Marathon | 13.1M, 10K, 5K | San Leandro, CA | Starting in the San Leandro Marina and running along the shoreline of the San Francisco Bay, you can expect great views and, with any luck, a gentle breeze to keep you cool. |
08/02/2025 | Susan B Anthony Women's 5K | 5K | Sacramento, CA | Founded in 1976, the Susan B. Anthony (SBA) 5k offers something for both competitive and casual runners alike. |
08/02/2025 | Truckee Half Marathon | 13.1M, 5K | Truckee, CA | This Truckee Running event showcases the diverse beauty of sierra landscapes and gives runners a taste of our wonderful mountain town. |
08/03/2025 | Golden Gate Double 8K | 8K, 5K, 3K | San Francisco, CA | It offers unparalleled views of the Golden Gate Bridge for more than 80% of the course! |
08/03/2025 | Salmon Creek Beach Run | 5M, 2M | Salmon Creek State Beach, CA | Post race picnicking encouraged (but no services or supplies will be provided). |
08/03/2025 | Skyline 50K | 50K, 13.1M | Castro Valley, CA | Skyline is known as a great race for first-timers. |
08/05/2025 | Sunset Through the Trees Fun Runs | 4M, 2.5M | Redding, CA | TBD. Race registration only at race day site. |
08/06/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
08/07/2025 | Redwoods 100-Mile Challenge | 100M | Camp Jones Gulch, CA | All-Inclusive, 4-night endurance challenge in Santa Cruz Mountains redwoods |
08/09/2025 | Alameda 10 Miler | 10M | Alameda, CA | We are combining forces with Outfront Endurance and Island Running Festival to bring you a full slate of events. |
08/09/2025 | Bear Creek | 13.1M, 10K, 5K | Lafayette, CA | If you are looking for a super-fast, flat, easy course to set a personal record, you are probably in the wrong place. |
08/09/2025 | Byxbee parkrun | 5K | Palo Alto, CA | It is a 5km run - it's you against the clock. |
08/09/2025 | Marlette Lake Tahoe | 50K, 10M | Lake Tahoe, CA | The Marlette 50K is a truly adventurous romp through some of planet earths most scenic and challenging trails. |
08/09/2025 | Mt. Madonna Challenge | 13.1M, 10K, 5K | Gilroy, CA | Join us for an exhilarating charity run that fuels dreams and empowers young athletes! |
08/09/2025 | Wicked Wine Run - Sacramento | 5K | Elk Grove, CA | Join Wicked Wine Run at this beautifully renovated and scenic ranch in Sacramento. |
08/10/2025 |
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5K, 10K | San Francisco, CA | Join us at our newest brewery partner, Laughing Monk! All of our runs start at a local brew house and work their way through city streets before ending back at the host watering hole for a post run social and raffle! Save $5 with coupon code SWEAT. |
08/10/2025 | Humboldt Bay Marathon | 26.2M, 13.1M, 5K, 1M | Eureka, CA | The Humboldt Bay Area combines spectacular scenery with the perfect climate for year-round running. |
08/10/2025 | SAR Wild Run | 13.1M, 10K, 5K | Shaver Lake, CA | Join the hundreds of people supporting Fresno County Search and Rescue with a race in the beautiful Sierra Nevada mountain range. |
08/12/2025 | Sunset Through the Trees Fun Runs | 4M, 2.4M | Redding, CA | TBD. Race registration only at race day site. |
08/13/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
08/16/2025 | Almaden Hills Trail Run | 50K, 26.2M, 13.1M, 8M, 10K, 5K | San Jose, CA | Set in Almaden Quicksilver park. Run in the beautiful hills of Almaden Valley. |
08/16/2025 | Byxbee parkrun | 5K | Palo Alto, CA | It is a 5km run - it's you against the clock. |
08/16/2025 | Red Wave 5K | 5K , 1.5M | Fresno, CA | The Red Wave 5k and 1.5mi run is a fundraising event to benefit Red Wave Indoor percussion. |
08/16/2025 | Redwood (Summer) Trail Run | 50K, 26.2M, 30K, 13.1M, 5M | Oakland, CA | The course travels through beautiful Redwood Regional Park. Enjoy the spectacular views along the East Ridge and West Ridge trails and wind through tall redwoods. |
08/16/2025 | Tamalpa Headlands 50K | 50K | Muir Beach, CA | Tamalpa Headlands 50k is a demanding ultramarathon with approximately 6,500-feet of elevation gain. |
08/19/2025 | Sunset Through the Trees Fun Runs | 5.5M, 2M | Redding, CA | TBD. Race registration only at race day site. |
08/20/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
08/23/2025 | Angel Island Half Marathon | 13.1M, 10K | Tiburon, CA | You'll fall in love with San Francisco all over again as you follow this hilly loop trail circumnavigating Angel Island. |
08/23/2025 | Byxbee parkrun | 5K | Palo Alto, CA | TBD. It is a 5km run - it's you against the clock. |
08/23/2025 | Moonlight Madness | 2M | Shasta Lake, CA | 2-Mile run/walk across Shasta Dam via the moonlight. |
08/23/2025 | Race for the Arts | 5K | Sacramento, CA | Come out for the Race and stay for the Free Arts Festival, featuring: 5K Run/Walk and Kids Fun Runs. |
08/23/2025 | Santa Rosa Marathon - 10K/5K | 10K, 5K | Santa Rosa, CA | Join thousands of runners across four race distances and experience the pastoral beauty of late summer in Sonoma County. |
08/23/2025 | Trail Run at Sly Park | 50K, 26.2M, 17M, 13.1M, 8M, 10K, 5K | Pollock Pines, CA | This event is held at the Sly Park Recreation Area in Pollock Pines, and it’s held under special use permit with the El Dorado National Forest. |
08/23/2025 | Walt Stack DSE Double Dipsea | 13.7M | Stinson Beach, CA | First held in 1970, the Walt Stack DSE Double Dipsea is a not just another tough trail run. It's a sadistically designed race, intended to test your patience and perseverance. |
08/23/2025 | We Run Oakland: For Our Children | 5K | Oakland, CA | Join DO & A Sista's Touch for our annual charity, 5K, to raise Human Trafficking Awareness. |
08/24/2025 | Good Dog - Dirty Dog 5K/10K | 10K, 5K | Granite Bay, CA | This event is for walkers, runners, and their dogs! We are excited to offer this event for athletes and their dogs and hope everyone has a fun time. |
08/24/2025 | LMJS Fourth Sunday Race | 15K, 10K, 5K | Oakland, CA | Fourth Sunday run. |
08/24/2025 | Santa Rosa Marathon | 26.2M, 13.1M | Santa Rosa, CA | Treat yourself to scenic miles through dazzling vineyards and pastoral beauty along mostly flat courses in beautiful Sonoma County! |
08/26/2025 | Sunset Through the Trees Fun Runs | 4.3M, 2M | Redding, CA | TBD. Race registration only at race day site. |
08/27/2025 | Fog City Run | 5K | San Francisco, CA | A hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
08/30/2025 | Bubble Run - Sacramento | 5K | Sacramento, CA | Participants run, walk, dance and play across 3 miles rad real estate. Foam Bogs of colored suds are encountered along the course. |
08/30/2025 | Byxbee Park Run | 5K | Palo Alto, CA | A free, fun and friendly weekly 5K community event. Walk, jog or run. We all participate for our own enjoyment. Please come along and join whatever your pace. |
08/31/2025 | Crystal Springs Run | 50K, 26.2M, 35K, 13.1M, 8K | Woodside, CA | Experience the towering redwoods, lush ferns and beautiful trails through Hubbart Park, King's Mountain and Bear Gulch. |
September 2025
Date | Event | Distance | Location | Description |
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09/01/2025 | Davis Labor Day Run | 10K, 5K, 1M | Davis, CA | Make plans to kick off your Labor Day with a run or walk at our annual event. Entry includes a t-shirt, finisher medal and post-race pancakes. |
09/03/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio. |
09/06/2025 | BT5K - Northern California | 5K | Oakland, CA | Run, walk or just join in the festivities! |
09/06/2025 | Byxbee Park Run | 5K | Palo Alto, CA | A free, fun and friendly weekly 5K community event. Walk, jog or run. We all participate for our own enjoyment. Please come along and join whatever your pace. |
09/06/2025 | China Peak Running Festival | 100K, 50K, 25K, 10K | Lakeshore, CA | Join us in the Western Sierra Range for an ultra mountain trail run. This is a big time race course that will satisfy runners of every level. |
09/06/2025 | Emerald Bay Trail Run | 12K | Lake Tahoe, CA | Join us for "one of America's most scenic trail runs" |
09/06/2025 | LSA's Run Home | 10K, 5K | Los Gatos, CA | Life Services Alternatives provide exceptional community living and programs for adults with developmental disabilities. |
09/06/2025 | Mendocino Running Festival | 12H, 6H, 13.1M, 10K | Mendocino, CA | A full weekend of fun awaits runners of all distances, along with plenty of activities for the entire family. |
09/06/2025 | Run to Remember | 5K, 1M | Clovis, CA | This event was established in honor and remembrance of the 2,977 people lost in the horrific 9/11 terrorist attack. |
09/06/2025 | Stevens Creek Striders Reservoir Run | 13.1M, 11K, 2.5M | Cupertino, CA | This run is a wonderful introduction to trail running, yet it promises to be challenging enough for the most experienced trail and ultra trail runners. |
09/06/2025 | Tanri Lake Race | 10H | Miramonte, CA | Enter either as an individual or a relay team of three runners. The 10 hour individual race lets runners complete as many 5 mile laps around Lake Sequoia as possible. |
09/07/2025 | Annadel Loop | 6.8M | Annadel State Park, CA | The Annadel Loop is a 6.75 mile run sponsored by the Empire Running Club. This is a challenging loop in the hills of Annadel State Park. |
09/07/2025 | Berkeley Mapathon and Half | 26.2M, 13.1M | Berkeley, CA | Enjoy amazing highlights and lesser known secrets of Berkeley in an epic way - a Mapathon! |
09/07/2025 | Cancer Champions Run/Wallk | 10K, 5K, 1M | West Sacramento, CA | Choose your distance and please join us! |
09/07/2025 | Diablo Trail Race | 50K, 26.2M, 13.1M, 10M, 4M | Clayton, CA | Mount Diablo provides spectacular views of San Francisco Bay Area and surrounding valleys. The longer events are mountainous and very scenic. |
09/07/2025 | Diplos Run Club 10K | 10K | San Francisco, CA | Sign up now, grab your gear and join hundreds of enthusiasts in a celebration of health, happiness and the sheer joy of being active. |
09/07/2025 | Fiesta 10K | 10K, 1M | Fresno, CA | Come and celebrate Mexican Independence Day at this unique event! Challenge yourself and do a DOUBLE RUN!! Yes, do the MILE followed by the 10K. |
09/07/2025 | Mammoth Bar Trail Runs | 13.1M, 10K, 5K | Auburn, CA | Mammoth Bar is known for its steep climbs and descents as well as its beautiful American River Canyon views. These are not your average courses. |
09/10/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio. |
09/12/2025 | Mammoth BUFF - Beer Mile Run | 1M | Mammoth Lakes, CA | In honor of what was once Oktoberfest's Beer Run, we now host our own beer run to keep the party going. |
09/13/2025 | Berkeley Trail Adventure | 50K, 35K, 13.1M, 10K | Berkeley, CA | Our Berkeley Adventure Run brings runners and walkers into two East Bay gems. Fabulous for all runners and even for those embarking on their first trail running event. |
09/13/2025 | Byxbee Park Run | 5K | Palo Alto, CA | A free, fun and friendly weekly 5K community event. Walk, jog or run. We all participate for our own enjoyment. |
09/13/2025 | Donate Life Run/Walk | 10K, 5K | San Ramon, CA | Together, we can save and heal more lives! One by one, together, we have the power to give hope to the men, women and children waiting for a second chance at life. |
09/13/2025 | Hedgehog Dash | 13.1M, 10K, 5K | Sacramento, CA | Get ready for a unique experience at the Hedge Hog Dash in the vibrant city of Sacramento! |
09/13/2025 | Hedgehog Dash | 13.1M, 10K, 5K | San Francisco, CA | Get ready for a unique experience at the Hedge Hog Dash in the vibrant city of San Francisco! |
09/13/2025 | National Chocolate Day: Run for Chocolate - San Francisco | 26.2M, 10K, 5K, 1M | San Francisco, CA | Get ready to indulge in a sweet celebration! This event is tailor-made for chocolate lovers of all ages and fitness levels. |
09/13/2025 | National Chocolate Day: Run for Chocolate -Sacramento | 26.2M, 10K, 5K, 1M | Sacramento, CA | Get ready to indulge in a sweet celebration! This event is tailor-made for chocolate lovers of all ages and fitness levels. |
09/13/2025 | Pincushion Hill Climb | 1M | Friant, Ca | 1 Mile! Straight Up! This will be a chip timed hill climb starting at the San Joaquin River Trailhead and finishing at the top of Pincushion Mountain. |
09/13/2025 | Running Fence Run - A Celebration of Freedom and Democracy | 10K | Cotati, CA | This is more than just a race, it's a celebration of : the enduring spirit of democracy, artistic expression, physical achievement and unity and rememberance. |
09/13/2025 | South Hills Single Track Trail Run - Fall | 50K, 26.2M, 16M, 13.1M, 9M, 10K, 5K, 1M | San Jose, CA | Our mission is to provide the most scenic, challenging and fun runs in California. Come run the Miner's Ghost Town and we promise you won't be disappointed! |
09/13/2025 | Stevens Creek Striders Saturday Run | 5M to 13M | Cupertino, CA | We meet every Saturday at 8:30 am at the Reservoir Parking Lot for a run, often followed by brunch. |
09/13/2025 | XTERRA Lake Tahoe 5K/10K | 10K, 5K | Tahoe, CA | Hit the dirt in this classic trail run, loop a beautiful trail system featuring tall pines, aspen groves and creek crossings. |
09/13/2025 | ZERO Prostate Cancer Run/Walk - Napa | 5K, 1M | Napa, CA | We are #ZERO Strong Together! Register and start fundraising today to support prostate cancer patients and families! |
09/14/2025 | Buffalo Stampede | 10M, 4M | Sacramento, CA | The Buffalo Stampede 10-Mile Run/Walk, the race that kicked off Sacramento’s road-racing tradition, is over forty years old! |
09/14/2025 | Honey Badger Half Marathon | 13.1M, 10K, 5K | Santa Venetia, CA | The Badger's race takes place in China Lake State Park in Santa Venetia. Sign up now to receive your AWESOME race "woodallion" AND Lifestyle tee. |
09/14/2025 | One Mile 4 One Child Charity Run | 10K, 5K, 1M | San Jose, CA | Experience the thrill of San Jose Valley Charity Running event. |
09/14/2025 | Race to Slow the Pace | 5K | Lodi, CA | The run will foster a connection to the land and the importance of slowing the pace of development to protect valuable farmland. |
09/17/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5km(ish) route through the Marina neighborhood and the Presidio. |
09/18/2025 | Mammoth Trail Fest | 50K, 26K | Mammoth Lakes, CA | Donuts, dirt, and epic trail running across the top of California. |
09/20/2025 | Byxbee Park Run | 5K | Palo Alto, CA | A free, fun and friendly weekly 5K community event. Walk, jog or run. We all participate for our own enjoyment. |
09/20/2025 | Gold Rush Growler Trail Run | 10M, 5K | Granite Bay, CA | This run starts at Granite Beach on Folsom Lake. The Gold Rush Growler features scenic single track courses along the shoreline. |
09/20/2025 | Kiwanis River Run | 5K, 2M | Fresno, CA | This is a chance to make a difference as proceeds support the Valley Children's Hospital Pediatric Trauma-Injury Prevention Program. |
09/20/2025 | Lederhosen 5K | 5K | Olympic Village, CA | Come out to Squaw Valley and start your Oktofest off with the Lederhosen. A super fun 5K in North Lake Tahoe to celebrate Oktofest. |
09/20/2025 | Mt. Umunhum Marathon | 50K, 26.2M, 25K | San Jose, CA | Introducing the ultimate trail running experience, an adventure that transcends boundaries. Embark on a breathtaking journey through rough, untamed beauty! |
09/20/2025 | Newark Mile | 4K | Newark, CA | The Newark Mile 4K is held each year in conjunction with Newark Days to celebrate the incorporation of the city. |
09/20/2025 | Rebel XC Challenge | 6K | Sacramento, CA | The Rebel XC Challenge, sponsored by the River City Rebels, a Sacrmento-based club, will take place at Hoffman Park in Carmichael. |
09/20/2025 | Rocky Ridge Trail Half Marathon | 13.1M, 10K, 5K | San Ramon, CA | This is the race your momma warned you about! The half marathon cannot be described as "flat and fast" or "good for beginners" or with any other nice phrase. |
09/20/2025 | Stevens Creek Striders Saturday Run | 5M to 13M | Cupertino, CA | We meet every Saturday at 8:30 am at the Reservoir Parking Lot for a run, often followed by brunch. |
09/20/2025 | Stride for Hope | 10K, 5K | Fresno, CA | Together, we can save and heal more lives! One by one, together, we have the power to give hope to the men, women and children waiting for a second chance at life. |
09/21/2025 | Asha-Jyothi 5K | 5K | Fremont, CA | Our organization is dedicated to serve the educational and healthcare needs of underprivileged children. This event is more than a run, it's all -singing and all-dancing at the end. |
09/21/2025 | Eureka Schools Foundation Fund Run | 5K | Granite Bay, CA | Ready to run, have fun, and make a difference? It’s time to lace up your sneakers and hit the pavement for an amazing cause! |
09/21/2025 | Island Running Festival | 13.1M, 10K, 5K, 1M | Alameda, CA | We bring a distance for every runner in a single day of racing. All races start and finish at Faction Brewery. |
09/24/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio. |
09/26/2025 | THE MAMMOTH | 208M | Mammoth Lakes, CA | This epic foot race takes you through the Eastern Sierra. Your route will take you along pristine alpine lakes, abandoned mines, golden fall foliage and dense pine forests. |
09/27/2025 | A Walk/Run to Remember | 5K | Carson City, NV | Join the fight to end Alzheimer's. All participants and teams are invited to show your PURPLE! |
09/27/2025 | Belmont Water Dog Run | 10K, 5K, 1M | Belmont, CA | This run has grown into an anticipated annual community event. Every year students from our local high school volunteer to help organize this event. |
09/27/2025 | Big Sur Trail Marathon | 26.2M, 13.1M, 5M | Big Sur, CA | Along the route you'll see some of the most amazing views that the California coastline has to offer. |
09/27/2025 | Byxbee Parkrun | 5K | Palo Alto, CA | A free, fun, and friendly weekly 5k community event. Walk, jog, run, volunteer or spectate – it's up to you! |
09/27/2025 | Cloverdale Hoptoberfest | 4M | Cloverdale, CA | Get ready for an unforgetable day where fitness,, community and craft beer collide! |
09/27/2025 | Dick Collins Firetrails | 100K, 50M, 26.2M | Castro Valley, CA | These races are run on the famous trails of the East Bay in the San Francisco Bay Area. Join us for some beautiful courses. |
09/27/2025 | Great Trail Race | 21K, 18K | Tahoe City, CA | The Great Trail Race is an epic point to point route between Truckee and Tahoe City, CA that you can either Ride or Run. |
09/27/2025 | HERS Breast Cancer Foundation Run/Walk | 10K, 5K | Fremont, CA | Join us at Quarry Lakes Reginal Park as we run/walk to support Bay Area breast cancer survivors. |
09/27/2025 | National Coffee Day: Run for Coffee - Sacramento | 26.2M, 10K, 5K, 1M | Sacramento, CA | Get ready for a caffeine-filled adventure! This exciting event invites coffee lovers of all ages and paces to participate. |
09/27/2025 | National Singles Day: Singles and Friends Running Club - Sacramento | 26.2M, 10K, 5K, 1M | Sacramento, CA | Get ready to lace up your sneakers and join the excitement. This unique running experience is designed for individuals looking to meet new friends. |
09/27/2025 | Pacifica Summit Run | 13.1M, 10K | Pacifica, CA | Do you want to know what the view looks like from the tallest mountain on the upper San Francisco Peninsula? Then look more further than the Pacifica Trail Run! |
09/27/2025 | Ridge Rambler Half Marathon | 13.1M | Bridgeport, CA | This is a POINT TO POINT COURSE!! The start line is not near the finish line but we will offer a shuttle from the finish back to the start. |
09/27/2025 | Spartan Trail - San Jose Trail Challenge | 50K, 13.1M, 10K | Saratoga, CA | Spartan has done a big jump into the trail running scene through Spartan Trail, creating and partnering with world class events for an outstanding experience. |
09/27/2025 | Stevens Creek Striders Saturday Run | 5M to 13M | Cupertino, CA | We meet every Saturday at 8:30 am at the Reservoir Parking Lot for a run, often followed by brunch. |
09/27/2025 | Sunset & Cider Trail Races | 50K, 13.1M, 5M | Auburn, CA | Join us for an unparalleled adventure at the Sunset & Cider Trail Races, where your favorite race awaits in the heart of American Canyon in Auburn. |
09/27/2025 | Superhero Run | 5K | Lodi, CA | Save the date! Every kid needs a hero but kids in foster care need SUPERHEROES! Run your own race at your own pace. |
09/27/2025 | Urban Cow Half Marathon | 5K | Sacramento, CA | Join the herd at the Urban Cow weekend, Sacramento's top running event. Start your weekend with a scenic 5K run/walk through beautiful William Land Park. |
09/28/2025 | Hot Pink Fun Run | 10K, 5K, 1M | Roseville, CA | Join us in the "Fight Against Breast Cancer"! Gather your friends and family and enjoy a fun race, followed by pancakes, bubbles and brews… |
09/28/2025 | LMJS Fourth Sunday Race | 15K, 10K, 5K | Oakland, CA | The distances offered at this race are one, two and three times around Lake Merritt. |
09/28/2025 | Phil Widener Empire Open | 3.4M | Santa Rosa, CA | The course is 3.4 miles of rugged dirt trails, a bit of asphalt bike path, a few short hills and some wicked competition. Please plan to arrive early or carpool. |
09/28/2025 | Urban Cow Half Marathon | 13.1M | Sacramento, CA | Follow Saturday's run with the Half marathon on Sunday. The half showcases Sacramento's most iconic neighborhoods and landmarks, including Capital Mall, Old Sacramento, and more! |
09/28/2025 | ZERO Prostate Cancer Run/Walk - Sacramento | 5K, 1M | Sacramento, CA | Let's #ZERO out Prostate Cancer Together! Register and start fundraising today to support prostate cancer patients and families! |
October 2025
Date | Event | Distance | Location | Description |
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10/01/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio. |
10/04/2025 | Auburn Half Marathon | 13.1M, 12K, 5K | Auburn, CA | A half marathon, 12K and 5K will take runners from the Auburn Overlook park, into Auburn State Recreation Area. |
10/04/2025 | Byxbee Parkrun | 5K | Palo Alto, CA | A free, fun, and friendly weekly 5k community event. Walk, jog, run, volunteer or spectate – it's up to you! |
10/04/2025 | Frida Fun Run | 5K, 2K | Fresno, CA | This race is also part of The Central Valley Runner of the Year Series. |
10/04/2025 | HDSA Team Hope 5K Fun Run | 5K | San Francisco, CA | Join us for the San Francisco Team Hope 5K Walk & Fun Run along Crissy Field. |
10/04/2025 | Nor Cal Think Pink 5K | 5K | Redding, CA | Help us RUN into October with one of our most popular events! |
10/04/2025 | Reservoir Dogs Trail Run | 35K, 13.1M, 10K, 5K | Orinda, CA | The Start and Finish for all races will be in the San Pablo Reservoir Recreation Area. |
10/04/2025 | Rock 'n' Roll San Jose Half | 5K | San Jose, CA | Welcome to Speed City, USA! Nicknamed after the legendary San Jose State track teams of the 60s, San Jose is all about speed. |
10/04/2025 | Star City San Bruno Mountain Half Marathon | 13.1M | Brisbane, CA | Our race was dreamed up by runners who love the trails of San Bruno Mountain. |
10/04/2025 | Think Pink 5K | 5K | Yuba City, CA | We still want to honor our survivors and celebrate those who have battled breast cancer along with other female forms of cancer. |
10/04/2025 | Wild Wild West Marathon | 50M, 50K, 26.2M, 10M | Lone Pine, CA | Run in the shadow of the High Sierra and through the Alabama Hills. |
10/05/2025 | Judgment Day Half Marathon | 13.1M | Bakersfield, CA | This is a very scenic course. |
10/05/2025 | Lions Turtle Bay Run | 13.1M, 10K, 2M | Redding, CA | We have runners from various parts of the country come to compete in the sport of running. |
10/05/2025 | Peace Officer Memorial Run | 13.1M, 5K, 1M | Modesto, CA | This race was developed to honor the police officers from Stanislaus County who were killed in the line of duty. |
10/05/2025 | Pumpkin Run | 5K | Clovis, CA | Run or walk along our scarecrow and pumpkin decorated course and earn your pumpkin and start a new family tradition! |
10/05/2025 | Run by the Sea | 13.1M, 12K, 4K | Santa Cruz, CA | This unique Half Marathon meanders along the gorgeous coastal bluffs of California's Central Coast in Santa Cruz and consists mostly of flat, packed dirt trails. |
10/08/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio. |
10/10/2025 | Mile Madness Endurance Run | 72H, 48H, 24H, 100M, 12H, 6H | Rocklin, CA | The course is 1.05 miles in length, meaning you will need to run 96 laps to get your 100-Mile buckle. |
10/11/2025 | Bizz Johnson | 50K, 26.2M, 13.1M, 10K | Susanville, CA | The Bizz Johnson Trail Marathon and 50K distances begin at Mason Station with an out and back on McCoy Road. |
10/11/2025 | Byxbee Parkrun | 5K | Palo Alto, CA | A free, fun, and friendly weekly 5k community event. Walk, jog, run, volunteer or spectate – it's up to you! |
10/11/2025 | Granite Head Trails & Ales | 11.2M, 6.6M | Granite Bay, CA | Granite Head is definitely the cure for what ales you! |
10/11/2025 | Look Good Feel Good Race | 26.2M, 13.1M, 10K, 5K | San Leandro, CA | Fasten your running/walking shoes and experience an adventurous run along the San Francisco east bay shoreline. |
10/11/2025 | Mt. Umunhum Trail Conquest | 50K, 26.2M, 13.1M, 5K | San Jose, CA | This race starts at the Hacienda Entrance of Almaden Quicksilver Park. |
10/11/2025 | Ruth Anderson Memorial Endurance Run | 100K, 50M, 50K | San Francisco, CA | Race HQ (bib#s, Start) : Lake Merced Blvd. & Sunset Blvd., San Francisco, CA. |
10/11/2025 | Wicked Wine Run | 5K | American Canyon, CA | Join the Wicked Wine Run for a fun-filled day of running or walking through the scenic vines, followed by wine, music, and friends! |
10/12/2025 | Cindy's Race 10K/6K | 10K, 6K, 1K | Santa Rosa, CA | 1 in 8 women will be diagnosed with breast cancer in their lifetime. Cindy is a mother, a wife, a friend who received this diagnosis. So, we race. |
10/12/2025 |
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10K , 5K | San Francisco, CA | City Beer Runs combines fully supported 5K and 10K runs with some of the best beer around to create one big run loving social event! Each run starts at a local brew house and works its way through city streets before ending back at the host watering hole for a post run social! Save $5 with coupon code SWEAT. |
10/12/2025 | Clo Cow Half Marathon | 13.1M, 10K, 5K | Petaluma, CA | The running of the Clo Cow Half Marathon, 10K & 5K is set to return to Historic Downtown Petaluma. |
10/12/2025 | Humboldt Redwoods Marathon | 26.2M, 13.1M, 5K | Weott, CA | This race is in Humboldt Redwoods State Park and the Half Marathon follows the second half of the iconic Avenue of the Giants Marathon course. |
10/12/2025 | Lake Evans 5K/10K | 10K, 5K | Bakersfield, CA | 5K & 10K Run/Walk. |
10/12/2025 | Run for Education | 10K, 5K | San Ramon, CA | Come for the Run, Stay for the Fun. |
10/12/2025 | Run for Vision 5K | 5K | San Francisco, CA | TBD. Join us at the Run for Vision 5K in October for a great race. |
10/15/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio. |
10/17/2025 | Lake Tahoe Marathon Weekend | 72M, 52.4M, 26.2M, 13.1M | South Lake Tahoe, CA | October 17-19, 2025. |
10/17/2025 | Lake Tahoe Marathon: Nevada Half | 13.1M | South Lake Tahoe, CA | The Nevada Half Marathon is a boutique down hill half marathon starting at the top of Spooner Summit, ending on the bike path on Lakeshore Drive. |
10/18/2025 | Break Free Run | 10K, 5K | Folsom, CA | Stand up against human trafficking this October by registering for the Break Free Run! |
10/18/2025 | Byxbee Parkrun | 5K | Palo Alto, CA | A free, fun, and friendly weekly 5k community event. Walk, jog, run, volunteer or spectate – it's up to you! |
10/18/2025 | Cal-Neva Marathon | 26.2M | Lake Tahoe, CA | The Cal-Neva Marathon is a boutique marathon limited 100 to a la carte runners. It is run as part of the Tahoe Triple. |
10/18/2025 | California Gold Rush Trail Run | 13.1M, 15K, 10K, 5K | Coloma, CA | All of the courses are a mix of very appealing singletrack dirt trails and a few paved areas. |
10/18/2025 | Diablo Summit Stomp | 30K, 13.1M, 10K, 5K | Coloma, CA | Courses are all on dirt trails, heading out from Castle Rock park in Walnut Creek, heading into Mount Diablo State Park -- all the way to the summit for the 30K. |
10/18/2025 | Donut Fun Run | 5K | Alameda, CA | The Donut Fun Run will be a timed, donut-themed 5k race held at Alameda Point's Seaplane Lagoon Promenade. |
10/18/2025 | Head for the Cure 5K - San Francisco | 5K | San Francisco, CA | Join us for our annual Head for the Cure 5K - San Francisco as we raise funds, awareness, and hope for the San Francisco brain tumor community! |
10/18/2025 | John Wayne Grit Series - Lone Pine | 13.1M, 10K | Lone Pine, CA | The run benefits John Wayne Cancer Foundation. |
10/18/2025 | Lake Tahoe Marathon: Carnelian Bay Half | 13.1M | Lake Tahoe, CA | This boutique half marathon course starts from Carnelian Bay and ends at Meadow Drive & H89. |
10/18/2025 | Oktoberfest Fun Run | 10K, 5K | Campbell, CA | Kick off your Oktoberfest celebrations at Campbell’s Annual Oktoberfest Fun Run 10K, 5K & Kids' Dash. |
10/18/2025 | Willow Hills XC | 5K | Folsom, CA | This 5k race is run in two loops of rolling hills around a water reservoir right next to Folsom High School. |
10/19/2025 | Big Steps for Little Friends 5K | 5K | San Francisco, CA | NLF’s Big Steps for Little Friends 5K Run/Walk will be at Golden Gate Park. |
10/19/2025 | Cloverdale Vineyard Races | 26.2M, 13.1M, 10K, 5K | Cloverdale, CA | Join us for our annual event, with all races in the vineyards near the historic Asti Winery! |
10/19/2025 | Dia de los Muertos Half | 13.1M, 5K | Bakersfield, CA | Join Us for a Vibrant Celebration of Life and Remembrance! |
10/19/2025 | Fresno Donut Run | 5K | Fresno, CA | A fun Donut Themed 5k Run & Walk at Woodward Park! |
10/19/2025 | Great Pumpkin Run | 13.1M, 10K, 5K | Half Moon Bay, CA | The world-famous Half Moon Bay Art & Pumpkin Festival is the season’s signature event, drawing hordes of visitors to the “World Pumpkin Capital” for an epic festival. |
10/19/2025 | Lafayette Reservoir Run | 10K, 5K, 2M | Lafayette, CA | The Run is the city’s most popular “family affair”. |
10/19/2025 | Lake Tahoe Marathon | 26.2M | South Lake Tahoe, CA | TBD. Sunday's Marathon is the original Lake Tahoe Marathon , and is the 3rd marathon of the Triple Marathon. |
10/19/2025 | San Mateo Rotary Fun Run | 10K, 5K | San Mateo, CA | San Mateo Rotary Fun Run |
10/19/2025 | Women's Run San Francisco - Mermaid Series | 10M, 10K, 5K | San Francisco, CA | 5k, 10k, Sirena10 Mile, Mermaid Dash, Virtual Run. |
10/22/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio. |
10/25/2025 | Big Sur River Run | 10K, 5K | Big Sur, CA | TBD. A beautiful loop course along the Big Sur River and the towering redwood trees of Pfeiffer Big Sur State Park. |
10/25/2025 | Byxbee Parkrun | 5K | Palo Alto, CA | A free, fun, and friendly weekly 5k community event. Walk, jog, run, volunteer or spectate – it's up to you! |
10/25/2025 | CASA of Kern County Superhero Run | 10K, 5K, 2K | Bakersfield, CA | Join fellow heroes and villains as we run, walk, and fly in support of children in foster care. |
10/25/2025 | Miles for Migraine - San Francisco | 5K | San Francisco, CA | This event is a fundraiser for Migraine & Headache Awareness, Treatment & Research. |
10/25/2025 | Monster Mash Dash | 5K | Fresno, CA | This Halloween-themed annual race is a not to miss event and we guarantee you will experience a spooktacular fun time! Wear a Costume and be in our Costume Contest! |
10/25/2025 | Napa Wine Country Marathon | 26.2M, 13.1M, 10K | Calistoga, CA | Babbling streams will be your soundtrack as you challenge yourself on the lush singletrack within Bothe-Napa Valley State Park. |
10/25/2025 | Oakland Hills Trail Run | 35K, 13.1M, 10K | Oakland, CA | A hidden redwood forest lies in the hills just a few miles over the ridge from downtown Oakland. |
10/25/2025 | Pinkathon Challenge for Breast Cancer | 50K, 26.2M, 13.1M, 10M, 10K, 5K | San Francisco, CA | The Pinkathon will happen as both an In-Person Event on Saturday, October 19, 2024 and as a Virtual Challenge that you can do wherever you want during the month of October! |
10/25/2025 | Trail Run at Sly Park | 50K, 26.2M, 18M, 13.1M, 8.5M, 10K, 5K | Pollock Pines, CA | This event is held at the Sly Park Recreation Area in Pollock Pines, and it’s held under special use permit with the El Dorado National Forest. |
10/26/2025 | Bakersfield Monster Mash Dash | 5K | Bakersfield, CA | This Halloween-themed annual race is an event that you won't want to miss and we guarantee you will experience a spooktacular fun time! |
10/26/2025 | Day of The Dead 5K | 5K | Fair Oaks, CA | Our race begins in the center of Old Fair Oaks Village before descending over the bridge along the scenic American River Trail. |
10/26/2025 | Dia de los Miles | 5K | Elk Grove, CA | Celebrate Hispanic heritage by joining us for the annual Dia de los Miles 5K and kids’ fun runs. |
10/26/2025 | Dia De Los Muertos 5K | 5K | Clovis, CA | Join us at this special celebration for "Dia de los Muertos"! Participants are encouraged to dress in their Dia de los Muertos make up and costumes! |
10/26/2025 | LMJS Fourth Sunday Race - October | 15K, 10K, 5K | Oakland, CA | The distances offered at these races are a 5K (once around the Lake), a 10K (two times around), and 15K (three times around). |
10/26/2025 | Winters Spooktacular Fun Run | 10K, 5K, 1M | Winters, CA | Grab your costume and running shoes and head out to the Winters Runners and Walkers Club Spooktacular Fun Run and Costume Contest. |
10/29/2025 | Fog City Run | 5K | San Francisco, CA | The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio. |