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December 2020

Date Event Distance Location Description
12/02/2020 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/05/2020 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/05/2020 Calero Park 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.
12/05/2020 Crissy Field Park Run 5K San Francisco, CA It is a 5km run - it's you against the clock.
12/05/2020 Death Valley Trail Marathon & Half Marathon 26.2M, 13.1M Death Valley National Park, CA This scenic wilderness trail run is on a gravel jeep road from Beatty, NV through the picturesque Titus Canyon, finishing in Death Valley.
12/05/2020 Kaweah Country Run 10K, 5K Three Rivers, CA The Kaweah Country Run is three events on two scenic out-and-back courses that utilize the historic Kaweah Trails in the lake bottom of Lake Kaweah.
12/05/2020 Midway Shelter Winter 5K 5K Alameda, CA The run will take you along the beautiful shoreline of Bay Farm Island and is a flat out and back with views of San Francisco and the Alameda Main Island.
12/05/2020 Peacock Gap Trail Run 13.1M, 10K, 5K San Rafael, CA An extensive trail network will greet you with views of Mt. Tam, San Pablo Bay, and San Francisco Bay as you traverse twisting single-track trails, climbing up and over the peak.
12/05/2020 San Joaquin River Trail 50K and 50 Mile 50M, 50K Friant, CA Come out and run some of the best trails in the valley along Millerton Lake and the San Joaquin River.
12/05/2020 The Ridge 60K, 37K, 23K San Francisco, CA TBD. An instant classic in the Bay Area trail running scene. We will feature "point-to-point" events and run from south to north from Baker Beach to Stinson Beach for the finish.
12/06/2020 California International Marathon 26.2M, 2.6M Sacramento, CA Our point-to-point, net downhill course has remained unchanged for 37 years, providing over 100,000 runners of all speeds the best chance to achieve their marathon goals.
12/06/2020 Great Santa Run 5K , 1M San Francisco, CA Races Start/Finish at Crissy Field across from Sports Basement Presidio.
12/06/2020 Sierra Point 10K 10K Brisbane, CA Run southbound on paved Bay Trail, turnaround at Oyster Point and return to finish.
12/09/2020 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/12/2020 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/12/2020 Crissy Field Park Run 5K San Francisco, CA We all run for own enjoyment. Please come along and join in whatever your pace!
12/12/2020 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.
12/12/2020 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.
12/12/2020 Napa to Sonoma Wine Country Half Marathon - 5K 5K Sonoma, CA The world-renowned Napa and Sonoma Valleys serve as the host of this incredible event; offering the finest in wine country ambience and hospitality.
12/12/2020 Rodeo Beach Trail Run 50K, 30K, 20K, 8K Sausalito, CA TBD. Enjoy vistas of the Pacific Coast as you take a scenic tour of the spectacular Marin Headlands.
12/12/2020 Run Walnut Creek 13.1M, 10K, 5K Walnut Creek, CA The Walnut Creek Half Marathon is a fun and exciting course for all; runners and walkers alike enjoy this course for its ever-changing scenery and spirited volunteers along the route.
12/12/2020 Santa Shuffle 5K 5K Chico, CA A run to help others this holiday season! Brought to you by the Salvation Army: Doing the Most Good.
12/12/2020 Spirit of Giving 5K 5K Modesto, CA Be part of something big this December.
12/12/2020 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.
12/13/2020  City Beer Runs - Seven Stills 10K, 5K San Francisco, CA This is a live event at Seven Stills! It's social with distancing! City Beer Runs combines fully supported 5K and 10K runs with some of the best beer around to create one big run loving social event! Each run starts at a local brew house and works its way through city streets before ending back at the host watering hole for a post run social! Save $5 with coupon code SWEAT
12/13/2020 Elf On The Run 10K, 5K San Francisco, CA The race runs along the San Francisco Bay Trail with gorgeous views of the Golden Gate Bridge. Save 20% with coupon code RUN
12/13/2020 Jingle Bell Rock 10K, 5K Santa Cruz, CA You can choose either 5K or 10K to run or walk, the kid's 1K for kids 10 and under.
12/13/2020 Kennedy Drive 8K 8K San Francisco, CA Races start promptly at 9:00 am, unless otherwise noted.
12/13/2020 Krampus Cross Country 5K/10K 10K, 5K San Francisco, CA 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). It's the ONLY event/race featuring a pre-race brewfest (Fri, 12/11). Save $5 with promo code SWEAT.
12/13/2020 Napa to Sonoma Wine Country Half Marathon 13.1M Sonoma, CA The world-renowned Napa and Sonoma Valleys serve as the host of this incredible event; offering the finest in wine country ambience and hospitality.
12/13/2020 Santa Run Silicon Valley 5K San Jose, CA This 5K Run/Walk is fun for the whole family and we encourage you to dress up as your favorite holiday character or tradition.
12/13/2020 ZombieRunner Quarry Lakes Run 26.2M, 30K, 13.1M, 10K, 5K Fremont, CA 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.
12/16/2020 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/19/2020 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.
12/19/2020 Baylands 10K Palo Alto UjENA 5K Christmas 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.
12/19/2020 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/19/2020 Crissy Field Park Run 5K San Francisco, CA We all run for own enjoyment. Please come along and join in whatever your pace!
12/19/2020 Dam Jingle Bell Dash 10K, 5K Orinda, CA A huge event each year with lots of fun and holiday spirit ! We had 80+ Dashers to Santa last year and he was thrilled.
12/19/2020 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!
12/19/2020 Sacramento Santa Run 5K Sacramento, CA A free Santa suit is provided for every registered runner participating in the Annual Sacramento Santa Run in Downtown Sacramento.
12/19/2020 Trails & Ales Winter Running Series (12/5, 12/12, 12/19) 6-8 miles San Francisco, CA Join us on 12/5, 12/12, and 12/19 - For YEARS, Sasquatch Racing has prided itself on providing fun, goofy, trail races in the SF/Bay Area that always include awesome TRAILS and world-class ALES! While the current normal prevents us from hosting live races as we've done in the past, we've come up with a safe, LIVE, winter trail running series that includes the "Sasquatch" spirit, trails, and ales.
12/19/2020 Woodside Ramble 50K, 35K, 13.1M, 10K Redwood City, CA Distances of 10K, Half Marathon, 35K and 50K make for the perfect proving grounds for runners, and hikers, of all abilities.
12/23/2020 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/24/2020 Christmas Eve Fun Run 5.3M Merced, CA TBD. The loop is about 5.3 miles, out and back on the bike path along Bear Creek.
12/26/2020 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/26/2020 Crissy Field Park Run 5K San Francisco, CA We all run for own enjoyment. Please come along and join in whatever your pace!
12/27/2020 Brazen Almost New Year's Eve 13.1M, 10K , 5K Fremont, CA Whether you are looking to squeeze in your first trail run or you're looking to log that 1,000th mile before the clock strikes midnight on 12/30/2018, this is your chance!
12/27/2020 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA 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.
12/27/2020 Rainbow Falls Holiday 5K 5K San Francisco, CA Races start promptly at 9:00 am, unless otherwise noted.
12/30/2020 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
12/31/2020 New Year's One Day 24H, 12H, 6H San Francisco, CA TBD. Start the New Year running as far as you can or as little as you want.

January 2021

Date Event Distance Location Description
01/01/2021 Auburn Resolution Run 10M, 10K, 5K Auburn, CA Start off your New Year with a great finish! Choose your distance and run/walk along the beautiful American River Canyon. After the run enjoy a cup of soup and hot chocolate.
01/01/2021 Brazen New Year's Day 13.1M, 10K, 5K Castro Valley, CA The sun is rising on the first day of the new year. Where should you be? Start the new year off right by hitting the trails of Lake Chabot for a scenic and invigorating run.
01/01/2021 Clikapudi Trail Run 13.1M, 10K, 5K Redding, CA Start the new year off on the right foot (or the left foot)! Come join in on the fun on New Year's Day! Enjoy one of the more popular single track trails that will take you in and around Lake Shasta.
01/01/2021 Kiwanis Resolution Run 10K, 5K Mountain View, CA Join us for a fun New Year's morning, January 1, at Mountain View Shoreline Park! Wake up late and still enjoy this race that starts at a later time. "Serving Children's Needs - Priority One!"
01/01/2021 Resolution Run 5K 5K Santa Rosa, CA Runners of all levels of ability are welcomed and encouraged to participate. Whatever the goal, we all share a common thread: the enjoyment of running.
01/01/2021 Solano Resolution Run 5K Fairfield, CA TBD. The flat, scenic course takes you through the beautiful campus and linear park trail at Solano Community College in Fairfield.
01/01/2021 Three Rivers New Year Fun Run 5K Lemon Cove, CA Begin 2021 on the right foot! Enjoy gorgeous views of Lake Kaweah and fresh mountain air. Start a new family tradition.
01/02/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/02/2021 Crissy Field parkrun 5K San Francisco, CA 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.
01/02/2021 Frosty Fun Run - Redding Civic Auditorium 4M, 2.5M Redding, CA TBD. This fun event takes place at Redding Park at an early 8am! Join us for the Frosty Fun Run.
01/03/2021 Dia De Reyes Half Marathon 13.1M, 5K Fresno, CA It is known as 'El Dia de Reyes' or Three Kings' Day. Flat fast out and back course along the Lewis S. Eaton trail (paved) and Old Friant Road.
01/06/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presidio.
01/09/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/09/2021 Castle to Coast Fun Run 8.2M San Simeon, CA We are looking forward to seeing you at the start line for 8.2miles of beautiful ocean views running on our well marked course.
01/09/2021 Crissy Field Park Run 5K San Francisco, CA 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.
01/09/2021 Frosty Fun Run - Lake Redding Park 4.3M, 2M Redding, CA Registration only on race day from 7-8am. Rain or shine. Refreshments will be available after the run.
01/13/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presidio.
01/16/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/16/2021 Crissy Field parkrun 5K San Francisco, CA 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.
01/17/2021 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!
01/20/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presidio.
01/23/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/23/2021 Crissy Field parkrun 5K San Francisco, CA 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.
01/23/2021 Frosty Fun Run - Fleet Feet 5.5M, 2M Redding, CA Registration is only on race day from 7-8am. Rain or shine. Refreshments will be available to all after the runs.
01/24/2021 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.
01/27/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
01/30/2021 Bakersfield Pirate 5K Booty Run 5K,2K Bakersfield, CA Join us for the Annual Pirate's of the Cure-i-bbean 5K Booty Run to help promote awareness of blood related cancers through Relay for life team member's fund raising efforts.
01/30/2021 Byxbee Parkrun 5k Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
01/30/2021 Crissy Field parkrun 5K San Francisco, CA 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.
01/30/2021 Frosty Fun Run - Clover Creek Preserve 4M, 2.4M Redding, CA Registration is only on race day from 7-8am. Rain or shine. Refreshments will be available to all after the runs.

February 2021

Date Event Distance Location Description
02/02/2021 Jed Smith Ultra 50M, 50K, 26.2M, 30K, 13.1M Sacramento, CA This race is held on a flat 5-mile loop along the American River.
02/03/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/06/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/06/2021 Crissy Field parkrun 5K San Francisco, CA 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 St., SF.
02/06/2021 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.
02/07/2021 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.
02/07/2021 Super Sunday Run 10K, 5K Sacramento, CA The Super Sunday Run XII features a 5k race, a 10k race, the Future Stars’ 1k community run/walk, and Pee-Wee 40-Yard Dash.
02/10/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/13/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/13/2021 Crissy Field parkrun 5K San Francisco, CA 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 St., SF.
02/17/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/20/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/20/2021 Crissy Field parkrun 5K San Francisco, CA 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 St., SF.
02/21/2021 Almond Blossom Run 10K, 5K Durham, CA Both courses start and finish at the rose garden in front of Durham High School and follow flat paved roads among beautiful blooming almond orchards.
02/24/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
02/27/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
02/27/2021 Crissy Field Park Run 5K San Francisco, CA It is a 5k run- it's you against the clock. Every Saturday at 9:00am.
02/27/2021 Juana Run 5K, 1M Palo Alto, CA The Juana Run will return in 2021. We are working on confirming a date of 2-27-2021.
02/27/2021 Support Blue Fresno 10K, 2M Fresno, CA You don’t have to risk your life day in and day out to keep our community safe. All you have to do is support those who do. Stand up and Run for the Blue!
02/28/2021 Dragoon Gulch 5K 5K Sonora, CA This trail run is located in the beautiful Woods Creek area of downtown Sonora California. Most of the run is on a well-groomed trail.
02/28/2021 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 2021

Date Event Distance Location Description
03/03/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/06/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
03/06/2021 Crissy Field parkrun 5K San Francisco, CA Crissy Field parkrun takes place every Saturday at 9:00am
03/06/2021 NorCal John Frank Memorial Run 10M, 3M, 1M Redding, CA Races run along the Sacramento River Trail System in Redding. Sign up early for best prices!
03/07/2021 Bakersfield Donut Run 5K Bakersfield, CA Run or walk and show your passion for donuts, get out there with your friends and family on our 5k Timed or 2k non-timed courses and earn those delicious Donuts!
03/07/2021 Livermore Valley Half Marathon 13.1M, 5K Livermore, CA Join us at the Annual 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 in the heart of Downtown Livermore.
03/07/2021 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.
03/07/2021 Santa Cruz Half Marathon 13.1M, 10K, 5K Santa Cruz, CA This unique stretch of the rugged California coastline is classic coastal - with rugged cliffs, moderate temperatures, blue skies and pounding surf!
03/10/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/13/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
03/13/2021 Crissy Field parkrun 5K San Francisco, CA Crissy Field parkrun takes place every Saturday at 9:00am
03/13/2021 Folsom Lake South Side Trail Run 38M, 50K, 21M, 13.1M, 10K, 5K Folsom, CA TBD. All very appealing single track, great running, some technical sections.
03/17/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/20/2021 Byxbee parkrun 5K Palo Alto, CA Byxbee parkrun takes place every Saturday at 8:00am.
03/20/2021 Crissy Field parkrun 5K San Francisco, CA Crissy Field parkrun takes place every Saturday at 9:00am
03/20/2021 Lucky Run 5K/10K 10K, 7K, 5K Davis, CA The Lucky Run will offer four events to choose from: 5K, 7K,10K and Kid's Fun Runs (ages 12 and under): 1/4 and 1/2 mile.
03/20/2021 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. The event is limited to 300 participants.
03/20/2021 Whale Run 10K, 5K Ft. Bragg, CA This is an out and back race. The Whale Run starts and finishes in the heart of Fort Bragg in the Skunk Train parking lot.
03/21/2021 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!
03/21/2021 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.
03/21/2021 Tesoro Viejo Spring Classic Half Marathon 13.1M, 10K, 5K Madera, CA This run will take you away from the busy city streets to tranquil paths through some of the most beautiful SPRING scenery which will rival any run in the state.
03/24/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
03/27/2021 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
03/27/2021 Heart & Soles Run 10K, 6K Santa Clara, CA Run from Santa Clara University through Avaya Stadium and back for a race you won't forget!
03/28/2021 Modesto Marathon 26.2M, 13.1M, 5K Modesto, CA TBD. The flat, fast course will be open 7 hours, allowing adequate time for first-time marathoners.
03/28/2021 Wildflower Run 10K, 5K, 2M Morgan Hill, CA 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.
03/31/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.

April 2021

Date Event Distance Location Description
04/03/2021 American River 50 Mile Endurance Run 50M, 25M Sacramento, CA American River has become the second largest 50 miler in the United States. The race attracts both veterans and novices alike.
04/03/2021 Antioch Rotary Club Bunny Hop 5K 5K Antioch, CA TBD. The race is on a soft trail through Dow wetlands. When you run by the beaver pond you will have a spectacular view of the Mt. Diablo in its background.
04/03/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/03/2021 Crissy Field Parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
04/03/2021 Folsom Lake Falcon Crest Trail Run 13.1M, 15K, 10K, 5K El Dorado Hills, CA TBD. 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.
04/04/2021 Artichoke Half Marathon 13.1M, 10K, 5K Pescadero, CA The race is just off the gorgeous windswept Pacific coastline in Northern California, just down the road from Half Moon Bay and a couple hours' drive from the nearby San Francisco Bay Area.
04/04/2021 California Classic Half Marathon 13.1M, 10K, 5K Fresno, CA We will host 3,000 runners in our Half Marathon and Relay as participants run through African Adventure in Fresno Chaffee Zoo, with a grand finish along home-plate inside Chukchansi Stadium.
04/07/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) route through the Marina Neighborhood and the Presido.
04/09/2021 San Luis Obispo Spartan Trail 50K, 13.1M, 10K Santa Margarita, CA Spartan Trail is a zero-obstacle trail race with 10 km, 21 km and 50 km events.
04/10/2021 Break Free Run Folsom 10K, 5K Folsom, CA Human trafficking is a global issue and the Break Free Run is a global movement.
04/10/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
04/10/2021 Crissy Field Parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
04/10/2021 Diablo Trails Challenge 50K, 13.1M, 10K, 5K Walnut Creek, CA Diablo Trails Challenge has a run for everyone from those hitting the trail for the first time to the experienced ultra-runners.
04/10/2021 Mission Possible 5K Bakersfield, CA Help fight Homelessness and Addictions One Mile at a time.
04/10/2021 Race for Open Space 10K, 5K, 2.5K Salinas, CA Tentative Future Date for Race For Open Space: April 10, 2021.
04/10/2021 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.
04/11/2021 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.”
04/11/2021 Mud Factor - Fresno 5K Sanger, CA Seriously fun, 5K obstacle run.
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.
04/28/2021 Fog City Run 5K San Francisco, CA A hilly 5km(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