Trail Running calendar near Vacaville 2026-2027

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.

A Thanksgiving Day trail event at Beals Point offering 5k and 10k courses plus a free 1k kids run for under-6s. The race supports Folsom's Hope, features one aid station, and requires runners to bring a cup or bottle.

A 28.4 mile out and back on the Dipsea Trail from Old Mill Park to Stinson Beach, repeated four times for the Quad. The route includes about 9,000 feet of climbing, stairs, named trail sections, aid stations, and strict time cutoffs.

Quarry Turkey 2026 at Quarry Lakes Regional Recreation Area in Fremont offers a half marathon, 10K, 5K and a short children's Little Turkeys run. The event includes youth divisions, a virtual option and a food drive for Alameda County Food..

A seasonal cross country event in San Francisco on 12/6/2026 with live and virtual options. Distances include a 5K, 10K, and a nine mile course; all entrants receive race swag and there is a pre race bib and shirt pickup with Brewfest.

Peacock Gap Trail Run at China Camp State Park on December 5, 2026 offers 10K, half and 30K trail courses with marked single track and fire roads, chip timing, aid stations, and a cupless water policy.

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.

Run through the redwoods and pines of Sanborn County Park. Choose from a half marathon, 10K, or 5K on scenic single-track trails. Walkers are welcome and all finishers get a medal.

A point to point half marathon on the Southside Trail at Folsom Lake featuring mostly single track, an overall ascent of 1,683 ft, multiple aid stations and a 4.5 hour time limit, starting at Salmon Falls and finishing at Brown’s Ravine.

A trail running event in Pilot Hill, CA on December 12, 2026 offering distances from 5K to 50K plus a kids run, held on stony dirt paths with lake views; organized by Troy’s California Trail Runs and with registration closing Dec 11.

Forest and ridge single-track runs in Woodside, California with 10K, half, 35K and 50K options, chip timing, aid stations, and cupless hydration requirements.

Trail races on the El Dorado Trail in historic Placerville offer distances from a kids run to a half marathon, with marked courses, aid stations, on site registration, and finishers’ medals.

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.

A family-friendly 5K, 10K and half marathon around Lake Chabot in Castro Valley on January 1, 2027. The half marathon is part of the Brazen Ultra Half Series and includes varied trail terrain with notable climbs.

A New Year’s Day 5K and 10K run and walk in Chicago Park that raises funds for local fire services, the long running 4 H club and the school PTA. Routes pass through scenic areas of Nevada County.

Join a community run and walk along the scenic trails of the Tuolumne River Regional Parkway in Modesto. Support the Sole Support Sponsorship Program while completing a 5K course alongside friends and family.

Two scenic trail races along Folsom Lake on January 9, 2027, offering a 12K and 5K on single-track trails, post-race local beer for athletes over 21, commemorative items, hot food and age-group awards.

Crystal Springs Trail Run on January 17, 2027 in Woodside California offers distances from an 8K to a 50K plus a free kids 50yd dash. Routes run through Huddart Park, King's Mountain and Bear Gulch with marked trails and regular aid station..

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 that crosses the Golden Gate Bridge into the Marin Headlands. Races include 15K, 25K, 50K and 50 mile options on January 23 to 24, 2027, organized by Spartan Trail.