Trail Running calendar near Yountville 2026-2027

A multi-distance trail event in the El Dorado Hills foothills offering routes from 5K to a trail marathon on mostly single-track dirt with rolling hills, aid stations, drop-bag service, and a creek crossing.

Late November trail races at Darrington Trail Head near Folsom Lake offer 5K, 10K, 18 mile and 36 mile options on rocky single track with marked routes and aid stations. Drop bags and support access are available for longer distances.

Celebrate Thanksgiving at Hellyer County Park with a trail race along Coyote Creek. Choose from a USATF certified half marathon, 10K, or 5K while competing for a chance to win a turkey.

Join a mostly flat and fast half marathon, 10K, or 5K in Fremont. Support the local food bank and earn a special connector medal by completing the Double Turkey Challenge over Thanksgiving weekend.

Escape the wrath of Krampus with this themed cross-country run in San Francisco or from anywhere. Choose from 5K, 10K, or a nine-mile course. All finishers get unique Krampus themed swag, including a woodallion and beer stein.

The Hunter S. Thompson Fear & Loathing will take place in San Francisco on Sunday 6 December 2026. You can run between 50 and 50 miles.

A point to point half marathon on the Southside Trail around Folsom Lake featuring mostly single track, about 1,683 ft of ascent, multiple aid stations and toilet access. The race starts at Salmon Falls Boat Launch and finishes at Brown's R..

Celebrate the final day of the year with a trail run at Lake Chabot in Castro Valley. Choose between half marathon, 10K, and 5K distances with options for runners and hikers alike.

Celebrate the first day of 2027 by running or hiking along the scenic trails of Lake Chabot. Choose between a half marathon, 10K, or 5K while supporting the East Bay Regional Parks Campership Program.

Explore the redwood trails of Huddart Park across distances from 8K to 50K. The routes offer varied terrain and significant elevation gain, with full aid station support. All finishers receive a custom medal in this cupless event.

Run through the towering redwoods and lush ferns of Huddart Park in Woodside. This trail event offers multiple distances from a five mile race to a 50K ultramarathon plus a free dash for children.

A trail running event in San Francisco on January 23-24, 2027, offering 15K, 25K, 50K and 50 mile options on soft, hilly trails. The course travels through the Marin Headlands and crosses the Golden Gate Bridge with coastal views.

Trail races on single-track trails around Folsom Lake with distances from a kids run to 50K, marked routes and staffed aid stations; parking is paid and dogs are not allowed on course.

Experience a scenic run or walk through Fremont with minimal climbing. Choose from 5K, 10K, or Half Marathon distances featuring diverse terrain from wood boardwalks to dirt paths along the bay.

Experience the coastal beauty of the Marin Headlands at the Golden Gate Trail Run. Choose from distances ranging from a 50K trail race to a fun kids dash with views of the Golden Gate Bridge and San Francisco.

Mt. Umunhum Trail Conquest (Winter) is a multi-distance trail event at Almaden Quicksilver County Park offering races from a kids run to a 50K with marked out-and-back courses, multiple aid stations, and summit sections to Bald Mountain or..

Experience a scenic and flat run along the San Francisco Bay shoreline starting from San Leandro Marina Park. This event offers half marathon, 10K, and 5K distances for both runners and walkers.

Experience the heights of San Pedro Valley Park with coastal views and various distances from 10K to 50K. This cupless trail race features significant elevation gain through rare coastal mountain habitats in Pacifica.

Experience a trail running event in Auburn featuring four major climbs and 6000 feet of elevation. Choose from distances ranging from 13km to 50km on a course with less than one mile of pavement.

Experience a trail run across the forest and hills of Angel Island with views of San Francisco and the Golden Gate. Choose from multiple race distances including a youth dash and enjoy a picnic at Ayala Cove.