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Race Calendar

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July 2021

Date Event Distance Location Description
07/31/2021 Crystal Springs Trail Run 50K, 26.2M, 35K, 13.1M, 5M Woodside, CA TBD. Experience the towering redwoods, lush ferns, and beautiful trails through Huddart Park, King's Mountain and Bear Gulch.
07/31/2021 Truckee Half Marathon 13.1M, 5K Truckee, CA The Truckee Half Marathon truly showcases the majestic and diverse beauty of Truckee.

August 2021

Date Event Distance Location Description
08/01/2021 Skyline 50K 50K Castro Valley, CA Skyline50k runs from Lake Chabot Marina to Skyline Gate and back, on a loop course that includes a little road, plenty of firetrail and a few really wonderful sections of single track.
08/04/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/07/2021 Crissy Field Park Run 5K San Francisco, CA TBD. Every Saturday at 9:00am. It takes place at 1199 East Beach Street.
08/08/2021 Golden Gate Double 10K, 8K, 5K San Francisco, CA This is a two-stage trail run (5K+halftime+3K) designed to challenge and entertain runners of all ages and skill levels!
08/08/2021 SAR Wild Run 13.1M, 10K, 5K Shaver Lake, CA TBD. Join the hundreds of people supporting Fresno County Search and Rescue with a race in the beautiful Sierra Nevada mountain range.
08/11/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/14/2021 Byxbee parkrun 5K Palo Alto, CA TBD. It is a 5km run - it's you against the clock.
08/14/2021 Castle Peak 100K 100K Truckee, CA Point-to-point 100k Endurance Run.
08/14/2021 Cool Moon Trail Races 100M Cool, CA The local, 100-mile alternative... 40 hours to finish and earn the new buckle created by legendary Silversmith James Stegman of Comstock Heritage in Reno.
08/14/2021 Crissy Field Park Run 5K San Francisco, CA TBD. Every Saturday at 9:00am. It takes place at 1199 East Beach Street.
08/15/2021 Marlette Lake Tahoe 50K, 10M Lake Tahoe, CA The Marlette 50K is a truly adventurous romp through some of planet earths most scenic and challenging trails.
08/18/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/21/2021 Byxbee parkrun 5K Palo Alto, CA TBD. It is a 5km run - it's you against the clock.
08/21/2021 Crissy Field Park Run 5K San Francisco, CA It is a 5K run- it's you against the clock. Every Saturday at 9:00am.
08/21/2021 Sly Park Lake Trail Run 50K, 26.2M, 18M, 13.1M, 8.5M, 10K, 5K Pollock Pines, CA This event is held at the Sly Park Recreation Area in Pollock Pines, and it’s held under special use permit with the El Dorado National Forest.
08/21/2021 XTERRA Lake Tahoe 5K & 10K 10K, 5K Incline Village , CA From the starting area the course heads north and onto the great trail system featuring tall pines, aspens and creek crossings.
08/22/2021 Bay to Breakers 15K, 12K San Francisco, CA This race has been around the block a few times: Runners, walkers, joggers, and partiers have participated in Bay to Breakers for over a century.
08/22/2021 Diablo 50K, 26.2M, 13.1M, 10M, 4M Clayton, CA TBD. Mount Diablo provides spectacular views of the San Francisco Bay Area and surrounding valleys.
08/22/2021 Good Dog - Dirty Dog 5K 5K Granite Bay, CA TBD. This event is for walkers, runners, and their dogs!
08/22/2021 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA Fourth Sunday run.
08/25/2021 Fog City Run 5K San Francisco, CA A hilly 5km(ish) route through the Marina neighborhood and the Presidio.
08/28/2021 Almaden Hills Trail Run 50K, 26.2M, 13.1M, 8M, 10K, 5K San Jose, CA TBD. Set in Almaden Quicksilver park. Run in the beautiful hills of Almaden Valley.
08/28/2021 Angel Island Half Marathon 13.1M, 10K Tiburon, CA You'll fall in love with San Francisco all over again as you follow this hilly loop trail circumnavigating Angel Island.
08/28/2021 Blacklight Run - San Jose 5K San Jose, CA The Blacklight Run™ is none other than the brightest, most fun run with distances up to 5k out there.
08/28/2021 Byxbee parkrun 5K Palo Alto, CA TBD. It is a 5km run - it's you against the clock.
08/28/2021 Crissy Field Parkrun 5K San Francisco, CA TBD. It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
08/28/2021 Mendocino Running Festival 13.1M, 10K Mendocino, CA Mendocino Running Festival reflects the glory of our new home, in Mendocino Woodlands State Park.
08/28/2021 Moonlight Madness 2M Shasta Lake, CA 2-Mile run/walk across Shasta Dam via the moonlight.
08/28/2021 Race for the Arts 5K Sacramento, CA TBD. Race for the Arts is for everyone – the serious runners (5K timed by B-tag) and for the casual runner/walker.
08/28/2021 San Francisco FrontRunners Pride Run 10K, 5K San Francisco, CA The San Francisco FrontRunners are excited to be able to host Pride Run in-person in 2021. The USATF-certified course is a 5K loop course in Golden Gate Park that the 10K runners get to enjoy twice.
08/28/2021 Santa Rosa Marathon - 10K/5K 10K, 5K Santa Rosa, CA Join thousands of runners across four race distances and experience the pastoral beauty of late summer in Sonoma County.
08/28/2021 We Run Oakland: For Our Children 5K Oakland, CA The We Run Oakland: For Our Children series is an annual family/community event designed to focus on our collective responsibility to STOP human trafficking.
08/29/2021 Mendocino Running Festival 13.1M, 10K Mendocino, CA TBD. Just outside of Mendocino proper, we continue the tradition of running through the gorgeous Mendocino forest.
08/29/2021 Santa Rosa Marathon 26.2M, 13.1M Santa Rosa, CA A new out and back Boston Qualifier course for the marathon with beautiful views.

September 2021

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

October 2021

Date Event Distance Location Description
10/01/2021 Marin Moonlight Run 10K, 5K Novato, CA What could be more fun than a beautiful Indian summer evening race under the full moon along the trails of the San Francisco Bay in Marin County? We don't know either!
10/02/2021 Big Sur Trail Marathon 26.2M, 13.1M, 5M Big Sur, CA You'll climb the Old Coast Rd. in Big Sur. Along the route, you'll see some of the most amazing views that the California coastline has to offer.
10/02/2021 Echo Summit Trail Challenge 50M, 50K, 26.2M, 20M, 10M South Lake Tahoe, CA Come join us at Adventure Mountain Snow Park as fall is setting in in the Sierras for an adventure to Echo Summit.
10/02/2021 Great Trail Race 21K, 18K Tahoe City, CA The Great Trail Race is an epic point to point route between Truckee and Tahoe City, CA that you can either Ride or Run.
10/02/2021 MJFF's Fall Virtual 5K/10K 10K, 5K Virtual By joining The Michael J. Fox Foundation's Fall Virtual 5K/10K, you are helping us reach to our ultimate finish line and close a gap on a cure for Parkinson's disease.
10/02/2021 Rock 'n' Roll San Jose 5K 5K San Jose, CA Through the years, Rock ‘n’ Roll San Jose has become known as the most spirited course in the series, as well as California’s fastest half marathon.
10/03/2021 California Classic Half Marathon 13.1M, 10K, 5K Fresno, CA The California Classic Half Marathon and the California Classic Century rides are on the same weekend, giving you the option to do one event or both in our Michelob ULTRA Challenge!
10/03/2021 Lions Turtle Bay Run 13.1M, 10K, 2M Redding, CA This half marathon will take you across three different bridges crossing the Sacramento River.
10/03/2021 Peace Officer Memorial Run 13.1M, 5K, 1M Modesto, CA TBD. This race was developed to honor the police officers from Stanislaus County who were killed in the line of duty.
10/03/2021 Rock 'n' Roll San Jose Half Marathon 13.1M, 10K San Jose, CA Through the years, Rock ‘n’ Roll San Jose has become known as the most spirited course in the series, as well as California’s fastest half marathon.
10/03/2021 Urban Cow Half Marathon 13.1M, 5K Sacramento, CA Some still call it Cowtown, but we call it Urban Cow, we want you to ramble out to Land Park and party in our pasture.
10/06/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.
10/08/2021 Lake Tahoe Marathon: Nevada Half 13.1M South Lake Tahoe, CA The Nevada Half Marathon is a boutique down hill half marathon starting at the top of Spooner Summit, ending on the bike path on Lakeshore Drive about 150 yards before Hwy. 28 in Incline Village.
10/08/2021 Lakeside Marathon 26.2M, 13.1M South Lake Tahoe, CA Lakeside Marathon course starts at 6230', goes up to 7000' and back down to near lake level at 6300' There will be at least six Aid Stations along the marathon route.
10/09/2021 Cal-Neva Marathon 26.2M, 13.1M Lake Tahoe, CA The Cal-Neva Marathon is a boutique marathon limited 100 to a la carte runners. It is run as part of the Tahoe Triple.
10/09/2021 Lake Tahoe Marathon: Carnelian Bay Half 13.1M Lake Tahoe, CA This boutique half marathon course starts from Carnelian Bay and ends at Meadow Drive & H89.
10/09/2021 Ruth Anderson Memorial Endurance Run 100K, 50M, 50K San Francisco, CA Race HQ (bib#s, Start) : Lake Merced Blvd. & Sunset Blvd., San Francisco, CA.
10/10/2021 Humboldt Redwoods Marathon 26.2M, 13.1M, 5K Weott, CA The race starts at the Dyerville Bridge which is on the famous Avenue of the Giants near the majestic Founders Grove in Humboldt Redwoods State Park.
10/10/2021 Lake Tahoe Marathon 72M, 26.2M, 20M, 13.1M, 10K, 5K South Lake Tahoe, CA The Lake Tahoe Marathon presents 3 Days of Fun and many events to choose from.
10/13/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.
10/13/2021 Run for Vision 5K 5K San Francisco, CA TBD. Join us at the Run for Vision 5K in October for a great race.
10/16/2021 John Wayne Grit Series 13.1M, 10K Lone Pine, CA Bring your John Wayne Grit to the trails and #RunToFightCancer.
10/16/2021 Rugged Maniac Obstacle Race - San Francisco 3M Pleasanton, CA You could spend your Saturday running errands or binge-watching TV, but wouldn’t it be more fun to do something absolutely insane with your friends?!
10/16/2021 Step Up for Down Syndrome 5K Run 5K Sacramento, CA TBD. The day features a 5K Down Syndrome Dash (timed run/walk), a 1-mile awareness fun walk, exhibitor area, food vendor, Kid Zone, face painting, Live entertainment and more!
10/17/2021 Folsom Blues Breakout 13.1 13.1M, 5K, 1K Folsom, CA The Half Marathon, Relay and 5K all start on the Johnny Cash Bridge (aka Folsom Lake Crossing).
10/17/2021 Half Moon Bay Pumpkin Run 10K, 5K Half Moon Bay, CA The world-famous Half Moon Bay Art & Pumpkin Festival is the season’s signature event, drawing hordes of visitors to the “World Pumpkin Capital” for an epic festival.
10/17/2021 Rock and Run 10K, 5K Aromas, CA Rock and Run describes the unique experience that awaits you as you meander through a 118 year-old, environmentally responsible, operational hard rock quarry.
10/17/2021 Run Rocklin 13.1M, 12K, 5K Rocklin, CA A community event for health, wellness and fund raising. Benefiting the Matt Redding Foundation, local schools and other non profit organizations.
10/20/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.
10/23/2021 Big Sur River Run 10K, 5K Big Sur, CA TBD. A beautiful loop course along the Big Sur River and the towering redwood trees of Pfeiffer Big Sur State Park.
10/23/2021 Death Valley Half Marathon 13.1M, 10K Death Valley, CA Both the 10K and the Half are out-and-back courses through Mustard Canyon.
10/23/2021 Napa Wine Country 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.
10/23/2021 Pinkathon Challenge for Breast Cancer 50K, 26.2M, 13.1M, 10M, 10K, 5K San Francisco, CA Our Tentative In-Person Pinkathon Event will start/end near the SF Ferry Building on Saturday, October 23, 2021.
10/23/2021 Tilden Trail Marathon 26.2M, 13.1M, 10K Orinda, CA Plenty of single track and fire roads (along with some serious elevation) presents an exciting challenge for all levels of runners.
10/23/2021 Vista Verde Skyline Run 50K, 26.2M, 13.1M, 10K Los Altos, CA Racers will enjoy stunning vistas of the Pacific Coast and of the spectacular Lambert Creek Watershed, Butano Ridge, Portola State Park and the newly opened Mindego Hill.
10/24/2021 Bakersfield Monster Mash Dash 5K Bakersfield, CA This Halloween-themed annual race is a not to miss event and we guarantee you will experience a spooktacular fun time! Wear a Costume and be in our Costume Contest!
10/24/2021 Cloverdale Harvest Marathon 26.2M, 13.1M, 10K Cloverdale, CA TBD. Experience the unparalleled scenic beauty of northern Sonoma County's wine country as you run on gentle dirt roads through vineyards resplendent in their fall colors.
10/24/2021 LMJS Fourth Sunday Race - October 15K, 10K, 5K Oakland, CA The distances offered at these races are a 5K (once around the Lake), a 10K (two times around), and 15K (three times around).
10/27/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5K (ish) route through the Marina neighborhood and the Presidio.
10/30/2021 Gravenstein 8 Hour 8H Sebastopol, CA The race will be run on a 2M loop along orchards and vineyards with open pastures and oak covered trails. You will have 8 hours to complete as many loops as you can while enjoying this idyllic setting.
10/30/2021 Hellaween Costume Run 5K Oakland, CA This 5K run takes place around Oakland's most BOOtiful lake! Whether you walk, skip, run or take some time at our sangria stop mid course, it's sure to be a fun time for all!
10/30/2021 Monster Mash Dash Halloween Run 5K Fresno, CA This Halloween-themed annual race is a not to miss event and we guarantee you will experience a spooktacular fun time! Wear a Costume and be in our Costume Contest!
10/30/2021 Oakland Hills Trail Run 35K, 13.1M, 10K Oakland, CA A hidden redwood forest lies in the hills just a few miles over the ridge from downtown Oakland.
10/30/2021 Stinson Beach Half Marathon 13.1M, 7M Stinson Beach, CA Waiting at the Stinson Beach start line will be the only time you spend at sea level during this challenging trail run.
10/30/2021 ZombieRunner Halloween 26.2M, 13.1M, 5M San Jose, CA TBD. Run in your best costume, send us a photo, and win prize!
10/31/2021 Bakersfield Monster Mash Dash 5K Bakersfield, CA This Halloween-themed annual race is an event that you won't want to miss and we guarantee you will experience a spooktacular fun time!
10/31/2021 Marin County Half Marathon 13.1M, 10K, 5K San Rafael, CA Celebrating good health at our annual Marin County Half Marathon, 10K & 5K, all to benefit the Cure Alzheimer's Fund.

November 2021

Date Event Distance Location Description
11/03/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
11/06/2021 Almaden Hills Run 50K, 21M, 13.1M, 8M, 10K, 5K San Jose, CA This event is set in Almaden Quicksilver Park, in the beautiful hills of Almaden Valley. In a nutshell: It's challenging and very fun. Volunteers get a free future race.
11/06/2021 Crissy Field parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
11/06/2021 Golden Gate Headlands Marathon 26.2M, 13.1M, 10K Mill Valley, CA Along this scenic trail run through the Marin Headlands you will soak in panoramic vistas of the Golden Gate Bridge, the San Francisco Bay and the lush Pacific shorleine peppered with vibrant wildflowers.
11/06/2021 Lake Chabot Trail Run 50K, 26.2M, 30K, 13.1M, 5M Castro Valley, CA TBD. The course starts at the Marina and travels around the popular Lake Chabot Reservoir and surrounding hills.
11/06/2021 Modedsto Memorial Classic 5K, 1M Modesto, CA This is an event benefiting and honoring American heroes. Entry fee includes a pancake breakfast prepared by the Modesto Vet Center.
11/06/2021 Mountain Vista 10K/5K 10K, 5K Kelseyville, CA Join us for the Mountain Vista 5K and 10K in the big little small town of Kelseyville. This event will raise funds to pay for extracurricular and enrichment activites at Mountain Vista Middle School.
11/06/2021 Rio Del Lago 100M Granite Bay, CA We are excited to have you join us for this 100 mile event. It offers a variety of terrains that novice and veteran runners will enjoy.
11/07/2021 Dipsea Race 7.4M Mill Valley, CA The Dipsea is the oldest race in America. It is considered to be one of the most beautiful courses in the world. Stairs and steep trails make it a grueling and treacherous race.
11/07/2021 Golden Gate Half Marathon 13.1M, 5K San Francisco, CA For longtime locals and first-time visitors alike, this course provides an extraordinary look at San Francisco.
11/07/2021 Mud Factor - Fresno 5K Sanger, CA Seriously fun 5K Obstacle Run!! You will encounter giant cargo and border climbs, water slides, "enternet" and epic mud crawls. There is a shortened running course for MF kids!
11/07/2021 Run the Parkway 20M, 13.1M Carmichael, CA Here is your chance to run either the 20 mile or half marathon distance at the William B. Pond Recreation Area on paved pathways.
11/07/2021 Superhero Heart Run - Bay Area 5K, 1M Fremont, CA Walk, run and FLY for those affected by CHD. You have the power to save the day for congenital heart defects. Run in your favorite super hero costume.
11/07/2021 Two Cities Marathon 26.2M, 13.1M, 13.1M Fresno, CA All start and finish activities will be located at beautiful Clovis Community College. This Boston qualifying marathon offers a scenic and truly flat course.
11/07/2021 Wine Country Half Marathon 13.1M, 5K Paso Robles, CA The annual Paso Robles Half Marathon and 5K are in the heart of the central California wine country. Vineyards and wine trails unfold along rolling hills filled with wine grape fields.
11/10/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
11/11/2021 No Excuses 5K 5K Sacramento, CA On Veterans Day, No Excuses 5K invites you to run, walk or roll and pay tribute to military heroes, while supporting programs for veterans needing assistance.
11/12/2021 Southwest Series 26.2M, 13.1M Nipton, CA We have a "no runner left behind" policy and we happily stay until the final finisher crosses the line. Walkers and strollers welcome. No pets, please.
11/13/2021 Crissy Field parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
11/13/2021 Feat to the Beach 200M Relay 200M Fresno, CA From the Central Valley to the Sea, the Feat to the Beach Relay will provide you with 200+ miles of great memories. The course follows scenic country roads as it winds through many small rural towns on the way to the Central Coast.
11/13/2021 Mt. Tam Trail Run 50K, 30K, 13.1M, 10K Stinson Beach, CA Mt. Tam Trail Run begins at Stinson Beach and climbs to perched views from Tam before returning via some of the best trails the Headlands have to offer until reaching the beach.
11/13/2021 Spartan Super - Sacramento 10K Sacramento, CA If the weather remains dry, you will be confronted with an arduous, rolling landscape. Should it rain, you will be presented with one of the most technical terrains you could hope to encounter.
11/13/2021 Two Peaks Trail Races 50M, 50K, 30K, 10K Redding, CA Adventure on the trails awaits! You will have an amazing run in Swasey Rec Area, Mule Mountain and Whiskeytown Lake. We have something for all levels.
11/14/2021 Alameda Holiday Kick Off 5K and 10K 10K, 5K Alameda, CA The course is a mostly flat dirt and paved trail that features a beautiful view of the San Francisco skyline and Bay Bridge.
11/14/2021 Bakersfield Marathon 26.2M, 13.1M, 10K, 5K Bakersfield, CA In addition to giving local runners an opportunity to run a Boston quaifying marathon in their own backyard, we are excited to welcome runners from across the U.S. and around the world.
11/14/2021 Concord 5000 5K Concord, CA This event will benefit the Blue Star Moms of Contra Costa County. Because of the steep and narrow terrain on the dirt trail sections there will be no strollers, scooters, wheelchairs or pets allowed on the course.
11/14/2021 Spartan Sprint - Sacramento 5K Sacramento, CA Call out your friends, co-workers and loved ones to get off the couch and into the mud. Whether they're helping you over the wall or chasing you up the mountain, make sure they are with you at the starting line.
11/17/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
11/20/2021 Crissy Field parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
11/20/2021 Golden Gate Spartan Trail Classic 100K, 50K, 13.1M, 10K San Francisco, CA Zero obstacles! Our race is held in one of the most picturesque, natural environments in the U.S. Choose your goal, begin your road to ultra or continue your journey through the trail running world.
11/20/2021 Trail Run at Sly Park 50K, 25K, 13.1M, 10M, 10K, 5K Pollock Pines, CA The course follows the trails surrounding Jenkinson Lake through endless pine trees aand buttery horse trails. This race is held three times a year to offer runners the experience of running this beautiful park through different seasons.
11/24/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
11/25/2021 Bakersfield Turkey Day Run 5K, 2M Bakersfield, CA Start Thanksgiving Day off by starting or continuing a new family tradition at the Bakersfield Turkey Day Run - Thanksgiving morning!
11/25/2021 Healdsburg Turkey Trot 5K Healdsburg, CA This course is all on the road and friendly to walkers and runners alike. Strollers too!
11/25/2021 Run Against Hunger 10K, 5K, Kids Run Stockton, CA This event benefits the Emergency Food Bank of San Joaquin. During these unprecedented times, your support is in most need. Please join us in supporting this great cause.
11/25/2021 Run to Feed the Hungry 10K, 5K Sacramento, CA Join us Thanksgiving morning to celebrate with friends and family to raise awareness about food insecurities in our community.
11/25/2021 San Francisco Turkey Trot 5M, 3M San Francisco, CA TBD. This is a cross country style course - mostly flat over natural terrain, including grassy meadows and dirt pathways or trails. It's Nature!
11/25/2021 Silicon Valley Turkey Trot 10K, 5K San Jose, CA TBD. Start Thanksgiving Day off on the right foot at the Applied Materials "Silicon Valley Turkey Trot". Many have made the run or walk a Thanksgiving Day tradition.
11/25/2021 Zoom Turkey Trot 13.1M, 10K, 5K San Jose, CA Run along the popular Coyote Creek trail Thanksgiving morning and stand to win a turkey!
11/27/2021 Crissy Field parkrun 5K San Francisco, CA It is a 5km run - it's you against the clock. Every Saturday at 9:00am.
11/27/2021 Napa Valley Endurance Run 50K, 35K, 13.1M Calistoga, CA Join us in Calistoga for the Napa Valley Endurance Run, three events run in glorious Robert Louis Stevenson State Park. Don’t let the name fool you — this is a challenging race.
11/27/2021 Quad Dipsea 28M Mill Valley, CA TBD. You must run the famed Dipsea Trail as marked. There is a total of 9200 feet of climb and an equal amount of descent in the 28 miles. Lottery opens in August.
11/28/2021 LMJS Fourth Sunday Race 15K, 10K, 5K Oakland, CA These races are free and do not require registration. The courses are one, two and three times around Lake Merritt.

December 2021

Date Event Distance Location Description
12/01/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/04/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/04/2021 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.
12/04/2021 Crissy Field Park Run 5K San Francisco, CA It is a 5km run - it's you against the clock.
12/04/2021 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.
12/04/2021 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.
12/04/2021 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.
12/05/2021 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.
12/08/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/11/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/11/2021 Crissy Field Park Run 5K San Francisco, CA We all run for own enjoyment. Please come along and join in whatever your pace!
12/11/2021 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.
12/11/2021 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.
12/11/2021 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.
12/12/2021 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).
12/12/2021 Napa to Sonoma Wine Country Half Marathon 13.1M, 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.
12/12/2021 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.
12/12/2021 ZombieRunner Quarry Lakes Run 26.2M, 30K, 13.1M, 10K, 5K Fremont, CA 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.
12/15/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/18/2021 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.
12/18/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/18/2021 Christmas Double 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.
12/18/2021 Crissy Field Park Run 5K San Francisco, CA We all run for own enjoyment. Please come along and join in whatever your pace!
12/18/2021 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!
12/18/2021 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.
12/19/2021 Santa Run Silicon Valley 5K San Jose, CA TBD. This 5K Run/Walk is fun for the whole family and we encourage you to dress up as your favorite holiday character or tradition.
12/21/2021 Christmas Lights Fun Run 5M Merced, CA We will run on city streets starting and finishing at Me-n-Ed's Pizzeria, running through nearby neighborhoods and see the Christmas light decorations.
12/22/2021 Fog City Run 5K San Francisco, CA The course is a hilly 5km (ish) through the Marina neighborhood and the Presidio.
12/24/2021 Christmas Eve Fun Run 5M Merced, CA TBD. The loop is about 5.3 miles, out and back on the bike path along Bear Creek.
12/25/2021 Byxbee parkrun 5K Palo Alto, CA It is a 5km run - it's you against the clock. Every Saturday at 8:00am.
12/25/2021 Crissy Field Park Run 5K San Francisco, CA We all run for own enjoyment. Please come along and join in whatever your pace!
12/26/2021 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.
12/29/2021 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