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Race Calendar

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April 2021

Date Event Distance Location Description
04/14/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.
04/17/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/17/2021 Crissy Field Parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
04/17/2021 Hillside School 5K Glow Run 5K Madera, CA Hillside School is hosting its inaugural 5k and family fun run. Join in this exciting event by running through the Tesoro Viejo neighborhood at sunset with your glow in dark attire.
04/17/2021 Mountain Vista 10K/5K 10K, 5K Kelseyville, CA Due to COVID-19 we are postponing the in person race to April 17, 2021.
04/17/2021 Napa Valley 50K 50K, 35K, 13.1M Calistoga, CA Runners on the 50k course will be treated rocky and steep uphill sections to bring participants to expansive views of the Napa Valley.
04/17/2021 Placerville Path Run 13.1M, 10K, 5K Placerville, CA TBD. Courses start & finish in beautiful historic Placerville CA.
04/21/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.
04/24/2021 American Association Of University Women 5K 5K Madera, CA A 5K to raise money for graduating seniors' college scholarships plus sending 8th grade girls to Tech Trek.
04/24/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/24/2021 Crissy Field Parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
04/24/2021 Madtown 5K 5K Madera, CA This is a fundraiser for the Madera Branch of American Association of University Womenfor our two kinds of scholarships that we give to young ladies.
04/24/2021 Mt. Tam Wild Boar Half Marathon 13.1M, 10K Mill Valley, CA Parts of this course include very narrow trails with steep drop-offs. The event is limited to 300 participants so don't wait too long to register!
04/24/2021 Rugged Maniac Obstacle Race - NorCal 5K Pleasanton, CA It's like recess for grown-ups, except our playground has a 3-story water slide and trampolines, and there’s a huge festival right in the middle of everything with a DJ and plenty of beer!
04/24/2021 Sierra Azul Trail Challenge 50M, 26.2M, 18M, 13.1M, 10K, 5K Los Gatos, CA TBD. Set in the Sierra Azul Open Space Preserve, this one of a kind running event provides unique access to gorgeous trails and scenery not commonly viewed. 100% trail/fire road.
04/24/2021 Silver Moon Race 100M Reedley, CA How many laps can you run in 6, 12, or 24-hours? Test your endurance and build up your distance in a 2-mile lap race, or go for the 100-mile distance.
04/25/2021 Alameda Hospital Foundation Run 10K, 5K Alameda, CA The Alameda Hospital Foundation 5k and 10k runs will take place on the beautiful estuary trail of Bay Farm Island.
04/25/2021 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA Every month except February, March, and June.
04/25/2021 The Great Sasquatch Road Trip 340 miles Virtual, CA It's not a virtual 'race'. It's not a virtual 'challenge'. The Great Sasquatch Road Trip is a 340 mile virtual running adventure! No matter how many miles you conquer or hotspots you uncover, you get an awesome Road Trip lifestyle tee, an amazing road trip woodallion designed by Aravaipa Artworx, a private FB group to interact with your fellow runners/Sasquatch fans, and much more.
04/28/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.

May 2021

Date Event Distance Location Description
05/01/2021 Armstrong Redwoods Trail Run 50K, 36K, 26K, 10K Guerneville, CA Our event begins and ends in Armstrong Redwoods State Park among ancient 1,200+ year old redwoods, more than 300 feet high!
05/01/2021 California Gold Rush Run 113.1M, 15K, 10K, 5K Coloma, CA Run entirely inside the Marshall Gold Discovery State Historic Park, set in the beautiful foothills of Coloma along the south fork of the American River. All the courses are a mix of very appealing singletrack dirt trails with a few paved areas.
05/01/2021 Fight For Air Climb 5K San Francisco, CA Join the Fight For Air Climb for the challenge and for a world free of COVID-19 and lung disease.
05/01/2021 Golden Gate Relay 190M San Francisco, CA Gather your friends or enemies (teams of 12). Decorate your vans. Dress in your best (costumes optional). "It's the most fun 24 feet can have in the best place on earth."
05/01/2021 Miwok 100K 100K Stinson Beach, CA The course is very hilly with spectacular views of SF and the Golden Gate Bridge, Mt. Tamalpais and the Point Reyes National Seashore.
05/01/2021 Sutter Buttes Spirit Mountain Run 13.1M, 10K, 5k Sutter, Ca This is a scenic paved route through the smallest mountain range in the world. All courses start on a flat road and have a slight gradual rolling incline and then a slight gradual rolling decline to the finish.
05/01/2021 Wild Wild West Marathon 50M, 50K, 26M, 10M Lone Pine, CA This trail race has something for every runner and is walker friendly. If you want clean air, safe surroundings and beautiful scenery, join us!
05/02/2021 Avenue of the Giants Marathon 26.2M, 13.1M, 10K Weott, CA Run with us in the majestic redwoods. This course is one of the most scenic courses in the country.
05/02/2021 Bay Bridge Half Marathon 13.1M Oakland, CA Welcome to the ONLY Half Marathon to cross the Bay Bridge presented by the Oakland Run Co.! Get ready for an exclusive hyper-local event. As always, we're Oakland first!
05/02/2021 Fair Oaks Sun Run 5M 5M, 2M Fair Oaks, CA This event is an annual tradition. Regarded as one of the most beautiful yet challenging courses around, it attracts both the avid runner and those who are out to have a great time.
05/05/2021 Fog City Run 5K San Francisco, CA The Fog City Run is a hilly 5km (ish) route through the marina neighborhood and the Presidio.
05/08/2021 Girls on the Run 5K 5K Sacramento, CA TBD. GOTR uses running to inspire and motivate girls, encourage lifelong health and fitness and build confidence through accomplishment.
05/08/2021 Lincoln Pace Race 10K, 5K Lincoln, CA The Lincoln PACE Race brings together people of all ages and abilities from near and far to enjoy a morning walk or run followed by our popular After Party held in the Amphitheater.
05/08/2021 Muir Woods Marathon 26.2M, 13.1M, 7M Stinson Beach, CA Mt. Tamalpais is a treasure trove of pristine trails. The course is on the best single track the mountain has to offer with some of the most beautiful mileage you will ever run.
05/08/2021 Pathways Run 10K, 5K, 1M Los Altos Hills, CA TBD. A fun, challenging trail run/walk event in Los Altos Hills, CA.
05/08/2021 Quicksilver 100K and 50K 100K, 50K San Jose, CA The Quicksilver 100k race is a Western States 100 Mile Endurance Run qualifier!
05/08/2021 Shasta Mud Run 10K, 5K Anderson, CA Challenge yourself and others on either the 5K or 10K trails through multiple obstacles. Designed for the serious athlete or those just wanting some adventurous family entertainment.
05/08/2021 Sly Park Lake Trail Run 50K, 20M, 13.1M, 10M, 5K Pollack Pines, CA TBD. The run around Sly Park Lake is a challenging course but no big climbs or long downhills. The trail goes through endless pine trees and is one of the best kept secrets in the Sierra.
05/08/2021 Yosemite Half Marathon 13.1M Bass Lake, CA The course includes rough terrain, fast downhill descent on a beautiful paved road and around Bass Lake.
05/09/2021 Lil Mud Runner Kids & Family Mud Run 1M Tracy, CA Run, duck, climb, slide and crawl through the muddiest one-mile obstacle course you've ever seen at the annual ‘Lil Mud Runner Kids & Family Mud Run.
05/09/2021 Mother's Day 5K 5K Granite Bay, CA This 5K takes place at Granite Bay State Park on Folsom Lake. All athletes will receive custom Mother's Day Finisher Medals.
05/12/2021 Fog City Run 5K SanFrancisco, CA The Fog City Run is a hilly 5km (ish) route through the marina neighborhood and the Presidio.
05/15/2021 Chocolate Festival Fun Run 5K, 1M Oakdale CA Join us for a fun filled day or week-end of chocolate festivities. You will find a variety of chocolate to satisfy every palate.
05/15/2021 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.
05/16/2021 Gold Country Half 13.1M, 5K El Dorado Hills, CA This is the flattest and fastest course in the foothills. Enjoy beautiful scenery, great participant services and an exciting finisher's party featuring beer, wine, food, music and fun for the whole family.
05/16/2021 Graniterock River Run 5K, 1M Hollister, CA TBD. A unique experience awaits as you meander through a working sand and gravel quarry. Participants can choose a 1M Family Fun Run or 5K Run/Walk.
05/16/2021 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.
05/16/2021 Ohlone 50K Trail Run 50K Fremont, CA The Ohlone 50K is a point-to-point race traversing the entire Ohlone Wilderness Trail.
05/19/2021 Fog City Run 5K San Francisco, CA The Fog City Run is a hilly 5km (ish) route through the marina neighborhood and the Presidio.
05/22/2021 Bishop High Sierra Ultramarathons 100K, 50M, 50K, 20M Bishop, CA These are high altitude races, with lots of climbing, in the scenic foothills of the Eastern Sierra Nevada, above the small town of Bishop.
05/22/2021 Devil's Slide Trail Run 50K, 30K, 13M, 11K, 4K Pacifica, CA Run the most scenic trails in Northern California, while supporting more than 1,000 individuals with developmental disabilities.
05/23/2021 Hillsborough Family Run 10K, 5K, 2K Hillsborough, CA The Fun Run is a run/walk followed by breakfast and field activites. It is a great time to exercise, celebrate the end of the school year and support Hillsborough Public Schools!
05/23/2021 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).
05/26/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
05/29/2021 4MPH Challenge 36M McCloud, CA Our course is 6 miles long each way, mostly flat, mostly single-track and very scenic. You must finish each 6-mile stretch in under 90 minutes. And then we send you back to do it again! 4MPH=15 minutes per mile. What could be easier than that?
05/29/2021 Armed Forces Half Marathon 13.1 Concord, CA Runners will get an incredible panoramic view of the installation. This part of the course up until now, this has been strictly off-limits to civilians.
05/29/2021 Modesto Memorial Classic 5K, 1M Modesto, CA The 1M and 5K run/walks include a pancake breakfast at Tuolumne River Park for all paid runners.
05/29/2021 Silver Moon Race 10K, 2M Paso Robles, CA A 2-mile lap race on farm roads around the vineyard. The course is easy and perfect to strengthen your endurance and extend your miles to the next level.
05/31/2021 No Excuses 5K 5K Sacramento, CA We invite you to run, wallk or roll to pay tribute to military heroes. This event benefits Canine Companions for Independence. Your dog is invited to join you.

June 2021

Date Event Distance Location Description
06/02/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
06/05/2021 Byxbee parkrun 5K Palo Alto, CA TBD. Every Saturday at 8:00am.
06/05/2021 Crissy Field Park Run 5K San Francisco, CA TBD. It is a 5km run - it's you against the clock.
06/05/2021 Eastside Adventure Race Festival 6H, 24H, 36H Mammoth Lakes, CA TBD. One weekend, three epic adventure races.
06/05/2021 Mississippi Bar Trail Run 10K, 5K Fair Oaks, CA Proceeds of the event support our beneficiary, the Rachel Anne Gray Memorial Scholarship.
06/05/2021 Spartan Super and Sprint - Monterey 10K Salinas, CA There’s nothing mediocre about this middle distance race. The Spartan Super offers the ideal blend between distance and speed.
06/06/2021 Lake Chabot Trail Challenge 13.1M, 5K Castro Valley, CA The half marathon course is a scenic, hilly loop, mainly on dirt fire roads.
06/06/2021 Spartan Trail - Monterey 50K, 13.1M, 10K Salinas, CA Spartan Trail is a no-obstacles foot race through rugged wilderness, overseen by legendary race directors from the world of trail running.
06/06/2021 Statuto Race 8K, 2M San Francisco, CA The Statuto Race commemorates the creation of the first Italian Constitution (Statuto Albertino) and is a running tradition in San Francisco going back almost 100 years.
06/06/2021 Truckee Running Festival 13.1M, 10K, 5K Truckee, CA Come one come all and join us for a morning of Truckee Running and fun at Riverview Park in Truckee, CA.
06/09/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
06/12/2021 Byxbee parkrun 5K Palo Alto, CA TBD. Every Saturday at 8:00am.
06/12/2021 Cody Lake Sierra Trail Challenge 13.1M, 10K, 5K Kyburz, CA TBD. This course is run in the beautiful Sierras. The course starts/finishes at the East end of the Strawberry Lodge.
06/12/2021 Crissy Field Park Run 5K San Francisco, CA TBD. It is a 5km run - it's you against the clock.
06/12/2021 DeCelle Memorial Lake Tahoe Relay 72M South Lake Tahoe, CA TBD. The Lake Tahoe Relay teams consist of 7 people, each running approximately 8 to 12 miles.
06/13/2021 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.
06/13/2021 Run to Squaw 8M Tahoe City, CA This 7.9 mile course travels alongside the Truckee River. Enjoy spectacular views along this stunning scenic corridor. The route is fast with little elevation gain.
06/13/2021 Squaw Valley Half Marathon 13.1M Olympic Valley , CA The course is fast and flat, a scenic out and back featuring mainly paved trail through the valley and along the Truckee River.
06/16/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
06/19/2021 Byxbee parkrun 5K Palo Alto, CA TBD. Every Saturday at 8:00am.
06/19/2021 Crissy Field Park Run 5K San Francisco, CA TBD. It is a 5km run - it's you against the clock.
06/19/2021 Huntington Lake China Peak 10K, 5K Lakeshore, CA This event features a lake swim in Huntington Lake, a challenging road bike course, and a ‘high altitude’ run finishes the race.
06/20/2021 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. The course features miles of single track through pine forests and high sierra meadows.
06/23/2021 Fog City Run 5K San Francisco, CA The Fog City Route is a hilly 5k (ish) run through the Marina Neighborhood and the Presidio.
06/23/2021 Lost Coast 3 day Stage Run 60M Petrolia, CA The Lost Coast is the remotest trail on the Aspire calendar. Logistics for us are a bear, which translates to incredible vistas and ocean side camping for runners.
06/26/2021 Angel Island 5 Mile and Half Marathon 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.
06/26/2021 Byxbee parkrun 5K Palo Alto, CA TBD. Every Saturday at 8:00am.
06/26/2021 Crissy Field Park Run 5K San Francisco, CA TBD. What is Crissy Field Park Run? It is a 5K run- it's you against the clock. When is it? Every Saturday at 9:00am. Where is it? It takes place at 1199 East Beach Street.
06/26/2021 Running with the Bears 26.2M, 13.1M, 10K Greenville, CA Our 2021 event features a 10K, Half Marathon, and Full Marathon offering participants stunning views and a fast and fun course.
06/26/2021 San Francisco FrontRunners Pride Run 10K, 5K San Francisco, CA We are planning for an in-person event on June 26 in Golden Gate Park with the option for a virtual race for anyone who would prefer that choice. Offering the virtual option allows us the flexibility to pivot to a fully virtual event if necessary. Currently, we are in a holding pattern with SF Rec & Park for our permits for an event on June 26. We expect an update regarding our permits to come soon; at which time we are willing to accept postponing the event once. If we can't host an in-person event in late-June, we will reschedule to a time later in the year when SF Rec & Park suggests. If that time comes around and in-person is still not a reality, we will go forward with a fully virtual event for that later date. All said, we will host a San Francisco FrontRunners Pride Run in 2021 and we'll keep you updated as we know more.
06/26/2021 Western States Endurance Run 100M Squaw Valley, CA The Western States 100-Mile Endurance Run is the world’s oldest and most prestigious 100-mile trail race.
06/27/2021 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.
06/30/2021 Fog City Run 5K San Francisco, CA The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio.

July 2021

Date Event Distance Location Description
07/03/2021 Lover's Leap of Faith 50M, 50K, 18M, 13.1M, 9M, 10K, 5K Kyburz, CA You will love these courses in our beautiful Sierras - great country,views, lakes, rivers, creeks, air quality plus high elevation. This is a very challenging and breathtaking course.
07/04/2021 Chester Classic 4th of July Fun Run 5K Chester, CA The course is one way on Main street and finishes at Collin Pine Lawn. Snacks and hydration will be provided after the race.
07/04/2021 Footloose Freedom Mile 1M Mammoth Lakes, CA The Footloose Freedom Mile is a one-mile road race staged 30 minutes before the town Fourth of July parade on Old Mammoth Road in Mammoth Lakes, CA.
07/04/2021 Kenwood Footrace 10K, 3K Kenwood, CA This event holds the distinction as the oldest running 10K footrace in California. This event is subject to selling out so register early!
07/04/2021 Run San Ramon 10K/5K 10K, 5K San Ramon, CA Run San Ramon's fastest mile! Get a healthy start to your 4th of July with this Independence Day Classic. Enjoy the paved loop course.
07/04/2021 Run to the Beach 10K, 5K Kings Beach, CA Start your Fourth of July week-end off the right way and join us for a run to the beach.
07/04/2021 Signarama Firecracker 5K 5K Redding, CA Kick off the 4th of July with this fun, festive patriotic event! This is a great way to celebrate our community, family and America! Gather all your friends and family and come to celebrate!
07/06/2021 Yosemite Backcountry Multi-day Running Tour 100M Mariposa, CA Yosemite needs no introduction. You are guaranteed an immersive and comprehensive Yosemite experience. All you have to bring is your running kit and your fitness. Group size is limited.
07/07/2021 Fog City Run 5K San Francisco, CA The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio.
07/10/2021 Davis Moonlight Race 13.1M, 10K, 5K Davis, CA This is a fun and festive evening replete with lots of cool glow in the dark themed race items, an energetic atmosphere and great running/walking routes.
07/10/2021 Golden Gate Trail Run 50K, 26.2M, 30K, 13.1M, 5M Sausalito, CA Enjoy vistas of the Pacific Coast and of the spectacular Marin Headlands with views of Tiburon, San Francisco and the Golden Gate Bridge. We hope to have your assistance in going cupless at this event.
07/10/2021 Whale Run 10K, 5K Fort Bragg, CA This invigorating Whale Run along the ocean's edge is a salute to the migrating gray whales. So join the fun and run with the whales on the scenic Noyo Headlands.
07/13/2021 Yosemite Backcountry Multi-day Running Tour 100M Mariposa, CA Yosemite needs no introduction. You are guaranteed an immersive and comprehensive Yosemite experience. All you have to bring is your running kit and your fitness. Group size is limited.
07/14/2021 Fog City Run 5K San Francisco, CA The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio.
07/17/2021 Oakland Redwoods 13.1M, 10K, 5K Oakland, CA The course of single track serendipity has great views of the San Fancisco Bay.
07/18/2021 Big Chief 50K 50K Truckee, CA The trail is a loop course. You will run through mighty trees, take in breathtaking views and conquer rocky summits on your journey.
07/18/2021 Napa to Sonoma Wine Country Half Marathon 13.1M, 5K Napa, CA This popular race features a fast and scenic course starting at the winery and finishing in historic Sonoma Plaza.
07/18/2021 Rancho 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.
07/19/2021 Badwater 135 135M Badwater, 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.
07/20/2021 Yosemite Backcountry Multi-day Running Tour 100M Mariposa, CA Yosemite needs no introduction. You are guaranteed an immersive and comprehensive Yosemite experience. All you have to bring is your running kit and your fitness. Group size is limited.
07/21/2021 Fog City Run 5K San Francisco, CA The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood and the Presidio.
07/24/2021 Fab 40s 5K 5K Sacramento, CA The Fab 40s Committee donates all the proceeds from this event to increase the understanding of this disease and its devasting effects.
07/24/2021 Kirkwood Thunder Mountain Trail Challenge 50K, 26.2M, 18.8M, 13.1M, 10K, 5K Kirkwood, CA This course is extremely challenging. If you like the High Sierra and you are in for an incredible challenge, please come and play on Thunder Mountain. You will absolutely love this new event.
07/24/2021 Squaw Mountain Run 3.6M Truckee, CA For many, this event has become a celebration of life following personal struggles with cancer or in memory of a loved one. We are a cupless race.
07/25/2021 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.
07/25/2021 Pear Fair Run 10M, 5M Courtland, CA TBD. The 5 and 10 Mile Country Runs are through local pear orchards and vineyards. Please be aware that there are beehives in the vicinity of the courses. After the run, stay for the fun.
07/25/2021 San Francisco Marathon 52.4M, 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.
07/28/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
07/31/2021 Crystal Springs Trail Run 50K, 26.2M, 35K, 13.1M, 5M Woodside, CA TBD. Experience the towering redwoods, lush ferns, and beautiful trails through Huddart Park, King's Mountain and Bear Gulch.
07/31/2021 Truckee Half Marathon 13.1M, 5K Truckee, CA The Truckee Half Marathon truly showcases the majestic and diverse beauty of Truckee.

August 2021

Date Event Distance Location Description
08/01/2021 Skyline 50K 50K Castro Valley, CA Skyline50k runs from Lake Chabot Marina to Skyline Gate and back, on a loop course that includes a little road, plenty of firetrail and a few really wonderful sections of single track.
08/04/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/07/2021 Crissy Field Park Run 5K San Francisco, CA TBD. Every Saturday at 9:00am. It takes place at 1199 East Beach Street.
08/08/2021 Golden Gate Double 10K, 8K, 5K San Francisco, CA This is a two-stage trail run (5K+halftime+3K) designed to challenge and entertain runners of all ages and skill levels!
08/08/2021 SAR Wild Run 13.1M, 10K, 5K Shaver Lake, CA TBD. Join the hundreds of people supporting Fresno County Search and Rescue with a race in the beautiful Sierra Nevada mountain range.
08/11/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/14/2021 Byxbee parkrun 5K Palo Alto, CA TBD. It is a 5km run - it's you against the clock.
08/14/2021 Castle Peak 100K 100K Truckee, CA Point-to-point 100k Endurance Run.
08/14/2021 Cool Moon Trail Races 100M Cool, CA The local, 100-mile alternative... 40 hours to finish and earn the new buckle created by legendary Silversmith James Stegman of Comstock Heritage in Reno.
08/14/2021 Crissy Field Park Run 5K San Francisco, CA TBD. Every Saturday at 9:00am. It takes place at 1199 East Beach Street.
08/15/2021 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.
08/18/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/21/2021 Byxbee parkrun 5K Palo Alto, CA TBD. It is a 5km run - it's you against the clock.
08/21/2021 Crissy Field Park Run 5K San Francisco, CA It is a 5K run- it's you against the clock. Every Saturday at 9:00am.
08/21/2021 Sly Park Lake Trail Run 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.
08/21/2021 XTERRA Lake Tahoe 5K & 10K 10K, 5K Incline Village , CA From the starting area the course heads north and onto the great trail system featuring tall pines, aspens and creek crossings.
08/22/2021 Bay to Breakers 15K, 12K San Francisco, CA This race has been around the block a few times: Runners, walkers, joggers, and partiers have participated in Bay to Breakers for over a century.
08/22/2021 Diablo 50K, 26.2M, 13.1M, 10M, 4M Clayton, CA TBD. Mount Diablo provides spectacular views of the San Francisco Bay Area and surrounding valleys.
08/22/2021 Good Dog - Dirty Dog 5K 5K Granite Bay, CA TBD. This event is for walkers, runners, and their dogs!
08/22/2021 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA Fourth Sunday run.
08/25/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/28/2021 Almaden Hills Trail Run 50K, 26.2M, 13.1M, 8M, 10K, 5K San Jose, CA TBD. Set in Almaden Quicksilver park. Run in the beautiful hills of Almaden Valley.
08/28/2021 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.
08/28/2021 Blacklight Run - San Jose 5K San Jose, CA The Blacklight Run™ is none other than the brightest, most fun run with distances up to 5k out there.
08/28/2021 Byxbee parkrun 5K Palo Alto, CA TBD. It is a 5km run - it's you against the clock.
08/28/2021 Crissy Field Parkrun 5K San Francisco, CA TBD. It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
08/28/2021 Mendocino Running Festival 13.1M, 10K Mendocino, CA Mendocino Running Festival reflects the glory of our new home, in Mendocino Woodlands State Park.
08/28/2021 Moonlight Madness 2M Shasta Lake, CA 2-Mile run/walk across Shasta Dam via the moonlight.
08/28/2021 Race for the Arts 5K Sacramento, CA TBD. Race for the Arts is for everyone – the serious runners (5K timed by B-tag) and for the casual runner/walker.
08/28/2021 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.
08/28/2021 We Run Oakland: For Our Children 5K Oakland, CA The We Run Oakland: For Our Children series is an annual family/community event designed to focus on our collective responsibility to STOP human trafficking.
08/29/2021 Mendocino Running Festival 13.1M, 10K Mendocino, CA TBD. Just outside of Mendocino proper, we continue the tradition of running through the gorgeous Mendocino forest.
08/29/2021 Santa Rosa Marathon 26.2M, 13.1M Santa Rosa, CA A new out and back Boston Qualifier course for the marathon with beautiful views.

September 2021

Date Event Distance Location Description
09/01/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.
09/04/2021 Bizz Johnson 50K, 26.2M, 13.1M. 10K Susanville, CA TBD. One of the great things about the Bizz Johnson is it is designed for the first time trail runner or the experienced trail runner. All runners can enjoy this event.
09/04/2021 The High Sierra 50K 50K Kyburz, CA An alpine masterpiece of a trail race that takes you on a one-way adventure through the forest of the High Sierra.
09/08/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.
09/10/2021 Tahoe 200 Mile Endurance Run 200M Tahoe, CA The Tahoe 200 is the first 200 mile single loop mountain race in the USA! The route is nothing less than magical and is the journey of a life time!
09/11/2021 Best Buddies Challenge: Hearst Castle 5K Carmel, CA For those who don’t ride, join Olympic legend Carl Lewis on our 5K trail run/walk taking place at Hearst Ranch in San Simeon.
09/11/2021 Emerald Bay Trail Run 7.5M South Lake Tahoe, CA Carved by ancient glaciers, Emerald Bay offers unequaled scenic trail running.
09/11/2021 Overlook Endurance Runs 50M, 50K, 25K Foresthill, CA Pick your distance! Point to point runs and a river crossing! Overlook Endurance Runs primarily follow the Historic Western States trail.
09/11/2021 Pacifica Summit Run 50K, 30K, 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!
09/11/2021 Redding Sunrise Rotary Mud Run 5K Redding, CA The fields of the historic Nash Ranch set the stage for the annual Mud Run where you will experience the best Mother Nature has to offer.
09/11/2021 Tahoe 100k 100K Tahoe, CA The Tahoe 100k is a point to point exploration of the Tahoe Rim Trail and the Tahoe Basin.
09/11/2021 Zombie Runner San Francisco 13.1M, 10K, 5K San Francisco, CA All races start/finish at East Beach and head West along the popular Golden Gate Promenade.
09/12/2021 Buffalo Stampede 10M Sacramento, CA TBD. The Buffalo Stampede 10-Mile Run/Walk, the race that kicked off Sacramento’s road-racing tradition, is over forty years old!
09/12/2021 San Francisco Giant Race 13.1M, 10K, 5K San Francisco, CA The Half Marathon, 10K, and 5K courses tour the scenic San Francisco waterfront and participants receive a shirt, finisher medal and exclusive runner bobblehead featuring a Giants team member.
09/12/2021 Tahoe 25k 25K Homewood, CA The Tahoe 25k is a fun and challenging race from the base of Homewood Mountain Resort all the way to Ellis Peak and Barker pass.
09/12/2021 Windsor Run & Wine 13.1M, 10K, 5K Windsor, CA Join us in Windsor with its timeless qualities and touch of European charm. The start and finish is located in the Windsor Town Green. Water and fluid every 2-3miles.
09/15/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.
09/17/2021 San Jose Spartan Trail 10K Saratoga, CA The Spartan Trail is a zero-obstacle trail race. It is a night race so headlamps are MANDATORY!
09/18/2021 Donate RUN4LIFE 10K, 5K San Ramon, CA You will have the opportunity to run or walk through a beautiful scenic route at Bishop Ranch in San Ramon.
09/18/2021 Lederhosen 5K 10K, 5K Olympic Valley, CA Come out to Squaw Valley and start your Oktoberfest off with a Lederhosen 5K Trail Run. The course is out and back on the Squaw Valley Trail.
09/18/2021 Miner's Ghost Town Ultra Trail 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!
09/18/2021 Newark Mile 4K Newark, CA TBD. We work hard to deliver you a memorable race experience so get ready for the Newark Mile 4K. The Newark Mile 4K is held each year in conjunction with Newark Days to celebrate the incorporation of the city.
09/18/2021 Ride to Walk Endurance Race 24H, 12H, 6H Lincoln, CA The runs are over a .84 mile loop on a working horse ranch to benefit Ride to Walk. It is 99% dirt, with just a few feet of asphalt and concrete.
09/18/2021 Run With the Cops 5K 5K Sacramento, CA This 5K is a great community event. We strive to make it better every year.
09/18/2021 San Jose Spartan Trail 50K, 13.1M, 10K Saratoga, CA The Spartan Trail is a zero-ostacle trail race with multiple distances from which to choose! You decide…begin your Road to Ultra or continue your journey through the trail running world!
09/19/2021 Avenue of the Giants Marathon 26.2M, 13.1M, 10K Weott, CA As noted by "Runner's World" magazine, The Avenue of the Giants is one of the most scenic courses in the country.
09/19/2021 BSM Women's Triathlon & 5K 5K Nevada City, CA The 5K is open to females 13 years and older. This is a great event for everybody. Keep training, stay healthy and positive.
09/19/2021 Clo-Cow Half Marathon 13.1M, 10K, 5K Petaluma, CA You will be cheered on by sheep, horses and, of course, our beloved Moo-cows as you run through rural Sonoma County farm country and rolling hills in this challenging course.
09/19/2021 Ice Cream Run by Races for Braces 13.1M, 10K, 5K, 1M Lathrop, CA Multiple options for ONE FREE ice cream! Get strong! Stay healthy! Be there to help raise funds for braces for foster-youth in need. Great memories with friends, family and others!
09/19/2021 Shaver Lake Mile High Triathlon, 10K, 5K 10K, 5K Fremont, CA The 5K run is on a combination of pavement and trails within Camp Edison - with a few steep hills. The 10K course is two loops of the 5K course.
09/22/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km(ish) route through the Marina neighborhood and the Presidio.
09/24/2021 Ultra Trail Run Lake Tahoe 100M, 50M, 50K, 25K Lake Tahoe, CA Epic Endurance Event invites you to Lake Tahoe, one of the world's most beautiful places. If you like epic views and plenty of vert then you won't want to miss the annual UTLT Mountain Ultra Trail Festival!
09/25/2021 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.
09/25/2021 Donut Hustle Novelty Run Redding, CA What is a "Donut Hustle"? How do I do it? Well, there will be three laps around Memorial Park in Redding and you MUST eat a donut before you start each lap!
09/25/2021 Gold Rush Trail Run 10M, 5K Granite Bay, CA TBD. Starts at Granite Beach along the shore of Folsom Lake.
09/25/2021 Headwaters Trail Run 50K, 30K, 10K Mt. Shasta, CA Headwaters Trail Run is a 50k, 30k, and 10k trail running event held in the Klamath Mountains west of Mount Shasta City, CA.
09/25/2021 Herd of Turtles Challenge Run 5K Clovis, CA Help us celebrate awareness and victories of all abilities and ethnicities and ages.This event is now designed for people to participate ALONGSIDE our amazing HOPE program clients.
09/25/2021 North Lake Tahoe Spartan Ultra & Beast 50K, 21K Olympic Valley, CA Spartan Beast is a half marathon, 30 obstacle race engineered to push you out of your comfort zone and right up to your limits.
09/25/2021 Oakdale Chocolate Festival Run 5K, 1M Oakdale, CA This is a fun family event! The 5K Fun Run is a fast out and back course. The One Mile is a flat walk or run.
09/25/2021 Smokey Bear Run 10K, 2M Bass Lake, CA Please join us at beautiful Bass Lake for the Smokey Bear Run/Walk. Slightly rolling hills and pristine views of Bass Lake are in store for the 10K and 2M participants.
09/26/2021 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA The distances offered at this race are one, two and three times around Lake Merritt.
09/26/2021 Martinez Run for Education 10K, 5K Matinez, CA The Run for Education is the signature fundraiser for the Martinez Education Foundation. The run will feature both a 5K run/walk and a 10K Run. Runners and walkers of all ages are welcome to participate.
09/29/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.

Did we miss any races? Please email us the race details (including web site URL) and you'll be entered in a monthly contest to win cool prizes. Race details should be sent to calendar@sweattracker.com