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Race Calendar

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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.

June 2023

Date Event Distance Location Description
06/03/2023 Bubble Run - Sacramento 5K Sacramento, CA Get your sneakers, strollers, and sunglasses ready, it’s time for Bubble Run! Come find out for yourself why we call it good clean run.
06/03/2023 Byxbee parkrun 5K Palo Alto, CA TBD. Every Saturday at 8:00am.
06/03/2023 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.
06/03/2023 Hot Fudge Sundae Run 5K Fresno, CA Run a 5k or Walk our 2m and earn your Hot Fudge Sundae! Want a little more fun? Join or create a Sundae Team!
06/03/2023 Miles for Mayo 5K 5K Brentwood, CA The Miles For Mayo 5K is a timed, family-friendly community event focused on commemorating the life of Matías “Mayo” Rogers and helping others find inspiration through running.
06/03/2023 Mississippi Bar Trail Run 5K Fair Oaks, CA Annual trail run through the wetlands, oaks and single track on the north shore of Lake Natoma.
06/03/2023 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.
06/03/2023 Redding Health Expo Run 5M, 2.5M Redding, CA Prior to the opening of the Redding Health Expo come run/walk with us.
06/03/2023 Stow Lake Stampede 5K San Francisco, CA The Stow Lake Stampede is a fun and exciting 5K/Kids’ Mile race* that the Impalas hold in Golden Gate Park every spring.
06/03/2023 The Loco Challenge 100M, 100K, 50K, 13.1M, 10K Butte Meadows, CA Mark your calendars because this annual, 5KBeer5K, 10k, Half Marathon, 50k, 100k & 100 MILE race will not be one to miss!
06/03/2023 Trail Quake Half Marathon 13.1M, 10K, 5K Saratoga, CA Put your ear to the ground and you can hear the distant rumbling. It's Brazen Racing's return to Sanborn Park and the San Andreas Trail!
06/04/2023 Bakersfield Hot Fudge Sundae Run 5K Bakersfield, CA Run a 5k or Walk our 1 Mile Walk and earn your Hot Fudge Sundae! Want a little more fun? Join or create a Sundae Team!
06/04/2023 Lake Chabot Trail Challenge 13.1M, 5K Castro Valley, CA The half marathon course is a scenic, hilly loop, mainly on dirt fire roads.
06/04/2023 Monterey Spartan Sprint 5K 5K Salinas, CA There’s nothing mediocre about this middle distance race. The Spartan Super offers the ideal blend between distance and speed.
06/04/2023 Statuto Race 8K San Francisco, CA The first Statuto Race was held in North Beach in 1919. It has been run every year, except for a period during World War II and in 2020 due to the COVID-19 pandemic.
06/04/2023 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.
06/07/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
06/07/2023 Lost Coast 3 day Stage Run 60M Fortuna, 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.
06/10/2023 Byxbee parkrun 5K Palo Alto, CA Every Saturday at 8:00am.
06/10/2023 Cinderella Trail Run 50K, 26.2M, 30K, 13.1M, 5M Oakland, CA The course travels through beautiful Redwood Regional Park.
06/10/2023 Cool Moon Trail Runs 100M, 100K, 50M, 25M Cool, CA The Heat 100-Mile Endurance Run of Northern California.
06/10/2023 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!
06/10/2023 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.
06/11/2023 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.
06/11/2023 Lake Merced 4.5M San Francisco, CA Run one clockwise loop around the lake staying entirely on jogging/pedestrian path.
06/14/2023 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
06/16/2023 Tahoe 200 Running Festival 200M Homewood, CA The Tahoe 200 is an incredible journey around the largest alpine lake in North America. The route circumnavigates the sparkling, clear blue waters of Lake Tahoe.
06/17/2023 Byxbee parkrun 5K Palo Alto, CA Every Saturday at 8:00am.
06/17/2023 Headwaters Trail Run 50K, 30K, 10K Mt. Shasta, CA These three scenic trail runs are named after the headwaters of the Sacramento River.
06/17/2023 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.
06/17/2023 SF One 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!
06/18/2023 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.
06/18/2023 Father's Day Run/Walk 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.
06/18/2023 Rainbow Falls 5K 5K San Francisco, CA Start/Finish: JFK Dr. & Transverse Dr.
06/21/2023 Fog City Run 5K San Francisco, CA The Fog City Route is a hilly 5k (ish) run through the Marina Neighborhood and the Presidio.
06/24/2023 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.
06/24/2023 Byxbee parkrun 5K Palo Alto, CA TBD. Every Saturday at 8:00am.
06/24/2023 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; this year’s beneficiary is LYRIC: Center for LGBTQQ+ Youth!
06/24/2023 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.
06/25/2023 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.
06/28/2023 Fog City Run 5K San Francisco, CA The Fog City Route is a hilly 5k (ish) run through the Marina Neightborhood 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