Trail Running calendar near Fairfield 2026-2027

Experience a scenic run through Coyote Point Recreation Area with a 5K or 10K event supporting mental health. Enjoy a free community wellness fair featuring local health vendors and family friendly activities.

These trail runs explore the beautiful Sonoma Coast State Park. The courses traverse a scenic ridgeline with ocean views and summit Red Hill. The event will return in 2027 with a planned new location in Monte Rio.

Join the free Dirt Circus community festival in San Francisco for a social trail run, a pancake breakfast, and a raffle. Meet local race directors and brands, and enjoy the circus vibe with costumes encouraged. The event starts with group r..

A scenic 10km loop trail run in Cool, California. The course features rolling hills, canyon views, and a fully stocked aid station midway.

The Coolest 10km Trail Run is set for June 6, 2026 in Cool, CA. Participants will run a 10km course on the scenic Olmsted Loop Trail.

A trail event in Castro Valley on June 7, 2026 offering a chip timed half marathon and 5K with on-course water, first aid support, guaranteed t-shirts for early registrants, and age division awards.

The Bay Area 100 is a point-to-point 100-mile ultramarathon journey through the East Bay hills, starting at UC Berkeley. With 18,000ft of climbing and a 33-hour limit, it traverses diverse terrain from redwood forests to exposed ridges. It..

The Cool Moon Trail Races offer six distances from 5K to 100K on scenic, well-marked loops near Cool, California. The event spans two days, with live tracking and multiple aid stations on course. All finishers receive a medal and shirt, wit..

Run 100 miles on a looped course through Northern California trails. The event has a 37-hour cutoff and multiple aid stations. Finishers earn a handcrafted silver buckle.

Experience the scenic trails of Lagoon Valley Park at The Pena Passage. Choose from 30K, 10K, or 5K distances featuring rolling hills and oak groves in a natural setting.

Live and virtual 5K, 10K and half marathon at Lake Chabot Regional Park in Castro Valley, June 26 to 29, 2026. Courses mix paved and trail sections with aid stations; live participants receive a shirt, handcrafted woodallion and beer sample..

The 14th Bay 2 Bankers offers a unique team adventure through San Francisco. Navigate a 5K or 10K course from Ghirardelli Square using a custom map. Teams of up to five can enjoy post-run refreshments.

Event Overview The Muir Woods Mountain Challenge is a trail running event offering three distances: a 10K, a half marathon, and a 30K. It takes place at Mount Tamalpais State Park in Stinson Beach, California. Course Details The course begi..

Tackle the trails of Auburn, CA in this second leg of a 3-part trail series. Choose from a 10.5 or 5.9 mile course through the American River Canyon, featuring challenging hills. Finish with a tech shirt, custom medal, and a celebratory bee..

The Rodeo Valley Trail Run is held in the Marin Headlands near Sausalito, California. The start is near historic Fort Cronkhite and Rodeo Beach. The courses use trails and fire roads in the Golden Gate National Recreation Area, featuring co..

One of the oldest 50k races in the US, the Skyline 50k Endurance Run loops through the scenic East Bay Regional Parks. Runners enjoy strong community support from local running groups and a festive finish at Lake Chabot Marina.

Bear Creek is a trail running event in Lafayette's Briones Regional Park with half marathon, 10K, and 5K distances. The courses feature hills, scenic views, and a rewarding final downhill mile. All finishers receive a custom medal and shirt..

A classic 50K trail ultramarathon in Marin County's stunning Headlands, featuring iconic trails and challenging terrain. The single-loop course offers spectacular coastal views and finishes at Santos Meadow. It's part of the USATFPA Grand P..

Navigate through historic San Francisco neighborhoods and parks in this unique 5K or 10K challenge. Use a custom map to find checkpoints and solve riddles individually or in teams of up to five people.

Tackle the legendary Double Dipsea, a 13.7-mile out-and-back on the historic Dipsea Trail from Stinson Beach. This unique race features a handicapped start, putting all runners on a single-track course of constant passing. Experience the hi..