Race Calendar

Region:

December 2022

Date Event Distance Location Description
12/10/2022 12Ks of Christmas 12K, 2M Redding, CA Both races will start at 9am from Lake Redding Park.
12/10/2022 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/10/2022 Fresno Jingle Bell Run for Toys for Tots 5K Fresno, CA Each year the event welcomes 3,000+ participants and is fast becoming a family annual tradition and raising toys and cash for the Toys for Tots campaign.
12/10/2022 Hark The Herald 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.
12/10/2022 Jingle Bell Run - Sacramento 5K Sacramento, CA Help keep the tradition going strong by jingling with your family and friends at the Arthritis Foundation's 2022 Jingle Bell Run.
12/10/2022 Modesto Spirit of Giving 5K 5K Modesto, CA Gives back to the community.
12/10/2022 Run Walnut Creek 13.1M, 10K, 5K Walnut Creek, CA The Walnut Creek Half Marathon is a fun and exciting course for all; runners & walkers alike enjoy this course for its ever-changing scenery & spirited volunteers along the route.
12/10/2022 Summit Rock Half Marathon 13.1M, 10K, 5K Saratoga, CA Tucked away just outside Silicon Valley, Sanborn County Park features miles of single-track trails dappled with filtered light through lush canopy.
12/11/2022 Hanukkah 8 Krazy Kilometers 8K, 2K Bakersfield, CA Runners, joggers and walkers of all ages are invited to the annual Hanukkah 8 Krazy Kilometers.
12/11/2022 Krampus Cross Country 5K/10K 10K, 5K San Francisco, CA TBD. This one is special for a few reasons... It's the ONLY trail event/race taking place in SF. It's the ONLY event/race featuring Krampus (The Christmas Devil).
12/11/2022 Rodeo Beach Trail Run 50K, 30K, 20K, 8K Sausalito, CA Enjoy vistas of the Pacific Coast as you take a scenic tour of the spectacular Marin Headlands with views of San Francisco, Tiburon, Golden Gate Bridge California coastline.
12/11/2022 Santa Hustle - Roseville 13.1M, 5K Roseville, CA It’s the MOST wonderful time of the year! So, find that Christmas spirit and join us on Sunday, December 12, 2021 at Vernon Street Town Square.
12/11/2022 ZombieRunner Quarry Lakes Run 26.2M, 30K, 13.1M, 10K, 5K TBD. The course starts in the scenic Quarry Lakes Regional Recreation area and follows the popular Alameda Creek Trail up to the mouth of Niles Canyon.
12/14/2022 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/17/2022 Bakersfield Jingle Bell Run for Toys for Tots 5K Bakersfield, CA The Jingle Bell Run will feature a Christmas designed Sweatshirts and Jingle Bells to all registered participants.
12/17/2022 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/17/2022 Captain s Winter Solstice Runaround 12H, 6H, 4H Modesto, CA Runners compete in 4-, 6-, or 12-hour events to see how many miles they can complete.
12/17/2022 Christmas Palo Alto Double 15K 15K, 10K, 5K Palo Alto, CA Bring the whole family and enjoy our pre Christmas events. Everybody gets a Santa Hat and all finishers get a medal.
12/17/2022 Last 10K & Final 2 Mile 10K, 2M Santa Rosa, CA Race in your Ugly Christmas sweater and be entered in a contest for a special prize!
12/17/2022 Woodside Ramble 50K, 35K, 13.1M, 10K Redwood City, CA TBD. Distances of 10K, Half Marathon, 35K and 50K make for the perfect proving grounds for runners, and hikers, of all abilities.
12/18/2022 Walnut Creek Youth and 5K Series - December 5K, 1M, 0.5M Walnut Creek, CA Earn points for every race you run.
12/21/2022 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/24/2022 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/24/2022 Placerville's Holiday Jingle and Mingle Run 13.1M, 15K, 10K, 5K Placerville, CA This event is run on the El Dorado Trail in beautiful historic Placerville. The path is surrounded with beautiful oak trees, rolling hills, and incredible views.
12/25/2022 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA TBD. Participation ribbons are given to all runners and place ribbons are awarded to the top runners, both male and female in ten year age groups.
12/28/2022 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
12/31/2022 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.

January 2023

Date Event Distance Location Description
01/04/2023 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presidio.
01/07/2023 3rd Annual Livermore-Pleasanton-City of Alameda Walk 50K Alameda, CA Barney Smith lost his father, Ed, a few years ago. In honor of him, and in order to raise awareness for an issue that all too often has no voice, we are inviting you to join us on a very special walk. This year, we have a 50K and a 5K option!
01/07/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/07/2023 Hacienda Hills Run (Winter) 50K, 26.2M, 30K, 13.1M, 9M, 10K, 5K San Jose, CA Located just outside of San Jose at the Almaden Quicksilver County Park, we are having a spectacular day of Northern California trail running.
01/07/2023 New Year's Duathlon & 5K 5K Granite Bay, CA The New Year's 5K Run/Walk is on a beautiful and fun course with nature trails and lake views. Not to be missed!
01/08/2023 3rd Annual Livermore-Pleasanton-City of Alameda Walk 5K Alameda, CA Barney Smith lost his father, Ed, a few years ago. In honor of him, and in order to raise awareness for an issue that all too often has no voice, we are inviting you to join us on a very special walk. This year, we have a 50K and a 5K option!
01/08/2023 Hot Chocolate 15K/5K 15K, 5K San Francisco, CA A chocolate lover's oasis waits at the post-race party! Celebrate your accomplishment with a finisher mug that includes fondue, dippables and our very own hot chocolate!
01/11/2023 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presidio.
01/14/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/14/2023 Castle to Coast Fun Run 8.2M San Simeon, CA We are looking forward to seeing you at the start line for 8.2 miles of beautiful ocean views running on our well marked course.
01/14/2023 IPA Beer Run 12K, 5K Granite Beach, CA The IPA Trail Run features two courses, each with scenic lake views on well-marked single track trails.
01/15/2023 The Redding Marathon 26.2M, 5K Redding, CA Enjoy a scenic journey down stream along the Sacramento River on paved running trails. Watch for bald eagles, osprey and other wildlife!
01/18/2023 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presidio.
01/21/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/22/2023 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA All those interested in running, whether beginner, walker, jogger or competitive racer are welcome to join our monthly runs.
01/25/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
01/28/2023 Byxbee Parkrun 5k Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/28/2023 Folsom Lake Sweetwater Trail Run 50K, 26.2M, 30K, 13.1M, 9M, 10K, 5K El Dorado Hills, CA This race is run on 95% single-track and 5% dirt road. The course primarily follows the South Side Trail.
01/28/2023 Gumby 10K & 5K 10K, 5K Granite Bay, CA This race features a beautiful trail course along the shores of Folsom Lake. It has plenty of aid stations and cheering volunteers and is well-marked.
01/28/2023 Race to the Flagpole 10K, 5K, 1M Livermore, CA This event is open to all ages and abilities. We host this event to encourage awareness and appreciation for fitness, as well as to foster community pride.

February 2023

Date Event Distance Location Description
02/01/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/04/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/04/2023 Death Valley Marathon 26.2M, 13.1M, 10K Death Valley, CA Enjoy an out-and-back relatively flat course. You'll admire the beauty of the surrounding desert as you follow this paved run through the heart of Death Valley National Park.
02/04/2023 Golden Gate (Winter) 50K, 26.2M, 30K, 13.1M, 8K 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.
02/04/2023 Mt. Umunhum Trail Conquest 50K, 26.2M, 30K, 13.1M, 7M, 5K San Jose, CA This race starts at the Hacienda Entrance of Almaden Quicksilver Park. The 30K, Trail Marathon, and 50K travel into the Sierra Azul Open Space Preserve.
02/05/2023 Kaiser Permanente San Francisco Half Marathon 13.1M, 10K, 5K San Francisco, CA The Kaiser Permanente San Francisco Half Marathon® is a runners’ favorite for its scenery and value. Fast and certified course through San Francisco’s scenic Golden Gate Park.
02/08/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/11/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/11/2023 CSUB Kinesiology Club Valentine's Run 10K, 5K Bakersfield, CA Experience a flat and fast course on the beautiful CSUB campus.
02/11/2023 Escape from Folsom 10 Miler and 5K 10M, 5K Granite Bay, CA The Escape from Folsom 5K and 10 Miler course are on scenic trails along the shoreline of Folsom Lake.
02/11/2023 Valentine Run/Walk - Race for Justice 4M, 2M Sacramento, CA Join us for the Sacramento Valentine Run, the annual Race for Justice!
02/12/2023 Montara Mountain Trail Run 50K, 26.2M, 20M, 13.1M, 10K Pacifica, CA Montara Mountain features the only undisturbed Coastal Mountain Habitat found over 100 miles of coastline.
02/12/2023 Oakland 5000 - Super Runday 5K 5K Oakland, CA Join the Oakland Run Co. Crew for a 5K run to make a preemptive strike on a day of friends, football and calories.
02/15/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/18/2023 Buzz Marathon 26.2M, 13.1M, 10K, 5K San Miguel, CA All races are run on the grounds of Camp Roberts, just north of San Miguel, California. Out-and-back course on paved road with dirt and packed gravel shoulders.
02/18/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/22/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/25/2023 Beer City Half Marathon 13.1M, 10K, 5K Santa Rosa, CA Kick off Beer City Festival with a run along Santa Rosa Creek. Half marathon, 10k, and 5k with fine regional beers and kombucha to taste at the finish.
02/25/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/25/2023 Lost Trail Half Marathon 13.1M, 5K Granite Bay, CA The Lost Trail 5K and Half Marathon have beautiful and very well-marked courses on single track trails along the shoreline of Folsom Lake with many scenic views.
02/26/2023 Davis Stampede Half Marathon 13.1M, 10K, 5K Davis, CA The Davis Stampede is a longstanding tradition with running and walking in Northern California.
02/26/2023 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA All those interested in running, whether beginner, walker, jogger or competitive racer are welcome to join our monthly runs.

March 2023

Date Event Distance Location Description
03/01/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/01/2023 Summer Sizzle 5K 5K Pacifica, CA The Summer Sizzle is the perfect way to celebrate hot weather. Are you keen to test yourself in hot conditions? Make sure you don't miss this fiery event!
03/04/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
03/04/2023 San Francisco 5K/10K for Special Olympics 10K, 5K San Francisco, CA The family-friendly event will begin with scenic 5K and 10K timed runs along the Bay with beautiful views of the city and the Golden Gate Bridge.
03/04/2023 Sanborn Trail Challenge 13.1M. 8M, 4M Saratoga, CA The course is 95% single track trail, extremely mountainous, very technical, lushly wooded with a mixed evergreen forest.
03/04/2023 Silver Moon Race - Paso Robles 24H, 100M, 10K, 2M, 12H, 6H Paso Robles, CA Experience running through a beautiful scenic vineyard, starting before sunset going under the vibrant full moon night, and into the sunrise.
03/04/2023 Sundial Shadow 50K, 13.1M Redding, CA This trail race follows the Sacramento River along the single track trails and finishes at the iconic Sundial Bridge in Turtle Bay.
03/04/2023 Way Too Cool 50K Endurance Run 50K Cool, CA This race has become the most sought after 50K in the US for veterans and novices alike.
03/05/2023 Livermore Valley Half Marathon 13.1M, 5K Livermore, CA Join the Livermore Valley Half Marathon in California’s oldest wine region featuring a ‘Best of the Bay’ awarded 13.1 miles, followed by the famed wine, beer & music festival.
03/05/2023 Lunar New Year Run 10K, 5K San Francisco, CA Our community events are a great way to get involved with your neighborhood and a healthy way to get the family together.
03/05/2023 Napa Valley Marathon 26.2M, 13.1M, 5K Calistoga, CA Following the famed Silverado Trail from Calistoga to Napa, our point to point marathon passes beautiful scenery & some of the most world-renowned wineries along the way.
03/08/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/11/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
03/11/2023 Chanoko Trail Runs 50K, 31K, 5M Granite Bay, CA Participants have a choice of three distances. All finishers will receive custom Chanoko Finishers Apparel.
03/11/2023 Marin Ultra Challenge 50M, 50K, 25K Sausalito, CA The Marin Ultra Challenge , our premier Marin County long distance trail race, delivers ample hills and sweeping descents.
03/11/2023 Shamrock'n 5K, 10K and Leprechaun Dash 10K, 5K Sacramento, CA The Shamrock'n 5K, 10K and Leprechaun Dash will be on Saturday, March 11, 2023. The Shamrock'n Half Marathon will be on Sunday March 12, 2023.
03/12/2023 Shamrock'n Half Marathon 13.1M Sacramento, CA The Shamrock'n 5K, 10K and Leprechaun Dash will be on Saturday, March 11, 2023. The Shamrock'n Half Marathon will be on Sunday, March 12, 2023.
03/12/2023 Zoom Angel Island 15M, 10M, 5M Tiburon, CA Angel Island is a hilly grass and forest covered island that provides spectacular views of Marin County, San Francisco and the Golden Gate.
03/15/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/18/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
03/18/2023 Folsom Lake South Side Trail Run 38M, 50K, 21M, 13.1M, 10K, 5K Folsom, CA All very appealing single track, great running, some technical sections.
03/18/2023 Little Loco Relay 65M Butte Meadows, CA 65-ish Miles 2, 3 or 6 runners or Singe Runner Option.
03/18/2023 Napa Valley Trail Marathon 26.2M, 13.1M, 10K Calistoga, CA The course is a bit challenging with the hills, streams and rocks - which makes it all the more exciting and rewarding.
03/18/2023 She.is.beautiful.Santa Cruz Run 13.1M, 10K, 5K Santa Cruz, CA She.is.beautiful is an inspiring, uplifting, and welcoming space for all women to come together to sweat their story in all the seasons of life.
03/18/2023 Zoom San Francisco 13.1M, 10K, 5K San Francisco, CA All races start and finish at Crissy Field and head west along the Golden Gate Promenade. All races offer spectacular and historic views of San Francisco.
03/19/2023 Oakland Running Festival 26.2M, 13.1M, 5K Oakland, CA This event has been nationally recognized as the Bay Area race to run by Competitor Magazine. The people of Oakland make you feel welcome from start to finish.
03/22/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/25/2023 Boardwalk Fun Run 5K, 1K Santa Cruz, CA Lace up your shoes and join the fun with this family friendly race through the Santa Cruz Beach Boardwalk. Run, jog or walk along the course. Strollers allowed.
03/25/2023 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
03/25/2023 Foam Glow - Fresno 5K Fresno, CA Ready, set, glow!! Foam Glow is the world's largest foam run and dance party. Light up the night on this 5K course as you run, walk and dance under the stars.
03/25/2023 Golden Gate Headlands Marathon 26.2M, 13.1M, 10K Sausalito, CA Run along a backdrop that combines gorgeous natural vistas with views of San Francisco's urban skyline in the distance, as well as a hilly and challenging course.
03/25/2023 Knickerbocker Canyon Trail Run 35K, 13.1M, 10K, 5K Auburn, CA Participants of this race will run the historic Western States Trail along the banks and canyons of the American River. We have a capacity of 400 runners across all distances.
03/25/2023 Marina Double 15K 15K, 10K, 5K Brisbane, CA This course is one of the most beautiful in the Bay Area. Run either the 10K, 5K Run/Walk or the Double Double 15K (10K+Break+5K).
03/25/2023 Mighty Dog Trail Runs 10K, 5K Granite Bay, CA This event offers two distances: 5K and 10K - both for walkers, runners and their dodgs!
03/25/2023 South Hills Single Track Trail Run 50K, 26.2M, 16M, 13.1M, 9M ,10K, 5K San Jose, CA Beginning at Calero County Park, this trail run has everything! Experience awesome single track, great hills and dirt paths.
03/26/2023 Bakersfield Marathon 26.2M, 13.1M, 10K, 5K Bakersfield, CA In addition to giving local runners an opportunity to run a Boston qualifying marathon in their own back yard, we are excited to welcome runners from across the US and around the world.
03/26/2023 LMJS 4th Sunday Run 15K, 10K, 5K Oakland, CA All those interested in running, whether beginner, walker, jogger or competitive racer are welcome to join our monthly runs. Help save our sanity by signing up ahead of the race!
03/26/2023 Modesto Marathon 26.2M, 13.1M, 5K Modesto, CA The flat, fast course will be open 7 hours, allowing adequate time for first-time marathoners.
03/26/2023 Napa Valley Women's Half Marathon 13.1M, 5K Napa, CA Wine. Dine. Run! The ultimate women's week-end! From walkers to runners, everyone can find their place!
03/26/2023 Wildflower Run 10K, 5K, 2M Morgan Hill, CA TBD. These flat, fast courses on scenic local back roads are ideal for runners wanting to improve their personal best times. Proceeds fund scholarships for women and girls.
03/29/2023 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.

April 2023

Date Event Distance Location Description
04/01/2023 American River 50 Mile Endurance Run 50M, 25M Folsom, CA American River has become the second largest 50 miler in the United States. The race attracts both veterans and novices alike.
04/01/2023 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/01/2023 Folsom Lake Falcon Crest Trail Run 13.1M, 15K, 10K, 5K El Dorado Hills, CA This race is run in the beautiful awesome foothills of El Dorado Hills. This area has incredible oak trees, green grass and is loaded with single track trails paralleling Folsom Lake.
04/01/2023 Prima Run 5K Reedley, CA The run is for serious & casual runners of all ages.
04/01/2023 Redwood 50K, 26.2M, 30K, 13.1M, 5M Oakland, CA The course travels through beautiful Redwood Regional Park.
04/02/2023 Credit Union SACTOWN Run 10M, 5K, 1M Sacramento, CA The flat, fast course starts and finishes at the spectacular California State Capitol and leads runners through the “best of Sacramento.”
04/02/2023 Foster 5K 5K Sunnyvale, CA For foster kids in Silicon Valley.
04/02/2023 Ruth McKenzie Preserve Half Marathon 13.1M, 10K, 5K Friant, CA Half Marathon participants will be treated to beautiful views and rolling hills.
04/05/2023 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.
04/07/2023 Lake Sonoma 50 - Trail Sisters 13.1M Healdsburg, CA Join us in Healdsburg, California, April 7th and 8th 2023 for the Classic Lake Sonoma 50 Mile, Marathon, and NEW Trail Sisters Half Marathon!
04/08/2023 Antioch Rotary Club Bunny Hop 5K 5K Antioch, CA This year we invite participants to run like the Hare or pace yourself steady to victory like the tortoise.
04/08/2023 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/08/2023 Foam Glow - Sacramento 5K Sacramento, CA Foam Glow 5K™ is a fun filled experience exposing runners to Glowing Foam and a ton of Blacklight’s all over the course.
04/08/2023 Lake Sonoma 50 50M, 26.2M Healdsburg, CA Join us in Healdsburg, California, April 7th and 8th 2023 for the Classic Lake Sonoma 50 Mile, Marathon, and NEW Trail Sisters Half Marathon!
04/08/2023 Santa Teresa King Richard Trail Run 13.1M, 10M, 10K, 5K San Jose, CA Santa Teresa County Park is located in the Santa Teresa Hills, ten miles south of downtown San Jose.
04/09/2023 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.
04/12/2023 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.
04/15/2023 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/15/2023 California Classic Half Marathon 13.1M, 10K, 5K Fresno, CA Join us when we host 2,000 runners in our Half Marathon, 10k and 5k Run as participants run through Sea Lion Cove with a grand finish at Chukchansi Stadium.
04/15/2023 California Gold Rush Run 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.
04/15/2023 Honey Run Covered Bridge 5K Chico, CA Help rebuild the Honey Run Covered Bridge by participating in our 1st Annual 5K / 10K run/walk.
04/15/2023 IPA10K, Brewfest & Beer Mile 10K, 3K, 1M Sebastopol, CA The IPA10K is a one-of-a-kind celebration of running, craft beer, and much more!
04/15/2023 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!
04/15/2023 Rodeo Beach Rumble 50K, 30K, 13.1M, 8K Sausalito, CA So close to San Francisco and the Golden Gate Bridge yet a world apart, the hills, valleys and beaches of the Golden Gate National Recreation Area are the perfect place for a race!
04/15/2023 SPASM Lake Chabot 50K, 26.2M, 30K, 13.1M, 5M Castro Valley, CA The course starts at the Marina and travels around the popular Lake Chabot reservoir and surrounding hills. Great course for first-time trail runners!
04/16/2023 Napa Valley Endurance Run 50K, 35K, 13.1M Calistoga, CA Join us for the Napa Valley Endurance Run, three events run in glorious Robert Louis Stevenson State Park, which starts and finishes at Logvy Park in downtown Calistoga.
04/16/2023 Presidio 10 10M, 10K, 5K San Francisco, CA The Levi’s Presidio 10 brought to you by the Guardsmen is back and better than ever!
04/16/2023 Run Rocklin 13.1M, 12K, 5K Rocklin, CA All proceeds from Run Rocklin are donated to Matt's Foundation.
04/19/2023 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.
04/22/2023 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/22/2023 John Adams Academy Revolution Run 10K, 5K, 1M Roseville, CA The Revolution Run is a 10K, 5K & 1 Mile walk/run that begins on the Roseville campus at One Sierra Gate Plaza and proceeds onto the City of Roseville's Miners Ravine Trail.
04/22/2023 Leona Divide 100K, 50M, 50K, 30K Green Valley, CA We are all set for April 23 and look forward to seeing you out on the beautiful Leona Divide course! The 100k is a Western States Qualifier.
04/22/2023 Romancing the 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.
04/22/2023 Rugged Maniac Obstacle Race - San Francisco 5K Pleasanton, CA Rugged Maniac boasts 25+ obstacles consisting of unlimited mud, giant inflatables, rope climbs, and our fan-favorite, sky-scraping waterslide, Accelerator 3.0.
04/23/2023 Horseshoe Lake Trail Run 50K, 26.2M, 13.1M, 5K Palo Alto, CA The course is within Skyline Ridge, Long Ridge and Russian Ridge Open Space Preserves. Be prepared for spectacular views of the Pacific Ocean and the Santa Cruz Mountains.
04/23/2023 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA Every month except February, March, and June.
04/23/2023 Om Run 13.1M, 10K, 5K Los Gatos, CA Om Run has evolved into a unique running event, in that, the focus is on community building and so attractions are mixed with a 5K, 10K and a 1/2 marathon race.
04/26/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
04/29/2023 American River Parkway Half Marathon 13.1M, 5K Sacramento, CA The Parkway Half Marathon has been an annual spring-time tradition for runners and walkers in the Sacramento region for 14 years!
04/29/2023 Sierra Azul Trail Challenge 50M, 26.2M, 20M, 13.1M, 7M, 5K Los Gatos, CA 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.
04/30/2023 Big Sur International Marathon 26.2M, 21M, 11M, 12K, 5K Big Sur, CA The course is from Big Sur to Carmel on scenic Highway 1, the nation's first nationally-designated Scenic Highway. The course is USATF certified and is an official Boston qualifier.
04/30/2023 Mud Factor - Fresno 5K Sanger, CA 5k obstacle run.
04/30/2023 My Heart Counts 5K/10K 10K, 5K Stanford, CA You will be running or walking through the beautiful Stanford Campus.

May 2023

Date Event Distance Location Description
05/03/2023 Fog City Run 5K San Francisco, CA The Fog City Run is a hilly 5km (ish) route through the marina neighborhood and the Presidio.
05/06/2023 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!
05/06/2023 Dirty Secret Trail Run 10.3M, 5.8M Cool, CA TBD. It is recommended that each runner carry a water bottle and drink regularly. Bring a sense of humor, a good attitude and a safety mind set.
05/06/2023 Folsom 100 100 Miles Folsom, CA Come join us for the first ever Folsom 100Mile Ultramarathon circumnavigating Folsom Lake!
05/06/2023 Folsom Lake Trail Runs 50K, 35K, 13.1M, 10K Folsom, CA This is one of our "flatter" courses, but there is still plenty of excitement. Every race is as challenging as you make it!
05/06/2023 Hacienda Hills Run 50K, 26.2M, 30K, 13.1M, 9M, 10K, 5K San Jose, CA This event is located just outside San Jose at the Alameda Quicksilver Park. Prepare yourself for a spectacular day of California Trail running in the Hacienda Hills.
05/06/2023 Kerman Almond Festival Scholarship Fun Run 5K Kerman, CA All family members are invited to join the fun! The fun includes a festival with live entertainment, food vendors, Almond Baking Contest and wine tasting.
05/06/2023 Miwok 100K 100K Stinson Beach, CA The Miwok 100K is one of the most beautiful and inconic trail ultramarthons in the world. The race is very competetive at the front and a rewarding challenge for all.
05/06/2023 Wild, Wild West Marathon 50M, 50K, 26.2M, 10M Lone Pine, CA This is the oldest trail marathon in the United States. It has been held for 45 years!
05/06/2023 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.
05/07/2023 Avenue of the Giants 26.2M, 13.1M, 10K Weott,CA The Avenue of the Giants is staged in the Humboldt Redwoods State Park. The paved course winds through giant old growth Redwoods.
05/07/2023 Aztec Run 5K Oakland, CA The Spanish Speaking Citizens' Foundation (SSCF) is pleased to bring you this fun-filled, family-friendly event to lift spirits and build community in celebration of Dia de los Muertos.
05/07/2023 Bay Bridge Half Marathon 13.1M Oakland, CA Welcome to the only event across the Bay Bridge. We are focused on a mission to bring you a one-of-a-kind, fresh experience to our hometown.
05/07/2023 Devil Mountain Run 10K, 5K, 1M Danville, CA This is one of the Bay Area's oldest running traditions in Downtown Danville the first Saturday in May. The mostly flat course is perfect for those who want to set a new PR as well as those wanting to get out for a run/walk with families
05/07/2023 Grapes of Wrath Triathlon 10K/5K 10K, 5K Delano, CA The Grapes of Wrath Triathlon is a fast and fun race in the central valley located east of Delano, CA.
05/10/2023 Fog City Run 5K SanFrancisco, CA The Fog City Run is a hilly 5km (ish) route through the marina neighborhood and the Presidio.
05/13/2023 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!
05/13/2023 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! Find your happy pace, keep moving forward and cross the finish line!
05/13/2023 Grizzly Peak Trail Run 50K, 26.2M, 30K, 13.1M, 10K Berkeley, CA The run starts at Lake Anza and travels through the beautiful and popular Tilden Park in the Berkeley Hills. T-shirts will be given to all pre-registered runners.
05/13/2023 Mermaid Run East Bay 18M, 13.1M, 10K, 5K Fremont, CA Kick off spring with the annual Mermaid Classic that features a run for everyone. Enjoy the fresh air and positive vibes.
05/13/2023 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.
05/13/2023 Paiute Meadows Trail Run 50K, 13.6M, 4.5M, 1M Susanville, CA Join us at Susanville Ranch Park as we showcase the region's premiere trail system.
05/13/2023 Quicksilver 100K and 50K 100K, 50K San Jose, CA The Quicksilver 100k race is a Western States 100 Mile Endurance Run qualifier!
05/13/2023 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.
05/13/2023 Sly Park Lake Trail Run 50K, 26.2M, 18M, 13.1M, 8.5M, 10K, 5K Pollack Pines, CA 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.
05/14/2023 Ohlone 50K Trail Run 50K Fremont, CA TBD. The Ohlone 50K is a point-to-point race traversing the entire Ohlone Wilderness Trail.
05/17/2023 Fog City Run 5K San Francisco, CA The Fog City Run is a hilly 5km (ish) route through the marina neighborhood and the Presidio.
05/20/2023 Bishop High Sierra Ultras 100K, 50M, 55K, 20M, 6K Bishop, CA These are high altitude races, with lots of climbing, in the scenic foothillls of the Eastern Sierra Nevada.
05/20/2023 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!
05/20/2023 Campus Life 5K 5K Fresno, CA This 5k + Kids Fun Run is for the whole family to enjoy!
05/20/2023 Greenhorn Ranch Trail Run 50K, 25K, 10K, 5K Quincy, CA Single direction loop course. 100% dirt forest roads and single track trail. 4200 vertical gain in each 25km loop.
05/20/2023 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.
05/20/2023 Livingston Splash of Color Run 5K Livingston, CA TBD. The 5k Fun Walk/Run will take begin in Memorial Park at 1339 Main Street and end up at Alvernaz Field after winding through several parks on the North side of town.
05/20/2023 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.
05/20/2023 San Francisco 50/50 Endurance Runs 50M, 50K Rodeo Beach, California Enjoy vistas of the Pacific Coast as you take a scenic tour of the spectacular Marin Headlands with views of Tiburon, Pirates Cove, San Francisco and the Golden Gate Bridge.
05/21/2023 Surfer's Path Half Marathon 13.1M Santa Cruz, CA Run in California's coastal playground. You will be treated to scenic courses, featuring breathtaking views of the Monterey Bay coastline and a series of world-renowned surf breaks.
05/21/2023 Windsor Wine Run 13.1M, 10K, 5K Windsor, CA Windsor Run and Wine is the most memorable race and post race festival in California!
05/24/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
05/27/2023 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.
05/27/2023 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!
05/27/2023 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.
05/28/2023 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).
05/31/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.