Trail Running calendar near Piedmont 2026-2027

A trail running event at Mount Diablo in Walnut Creek on October 17, 2026 offering 30K, Half Marathon, 10K and 5K courses on hilly trails where mud and creek crossings are possible.

Trail marathon, half marathon, 10K and 5K at Bothe-Napa Valley State Park on October 24, 2026. The single track course features hills, streams and rocks, is marked with orange ribbon, has limited entry and specific cutoff times.

Trail races through Redwood Regional Park in Oakland on October 24, 2026 offering 10K, half marathon, and 35K courses. Technical trails, substantial elevation, chip timing, cupless aid stations, and limited field size.

A Halloween-themed running event at Hellyer County Park with 5K, 10K, half and full marathon distances, youth divisions, a free kids' dash, a costume contest, certified half and full courses, aid stations every 2-4 miles, and cupless hydrat..

Trail races in Almaden Quicksilver Park from 5K to 50K over hilly dirt roads and single-track, with two staffed aid stations, drop-bag service for longer distances, and a finisher medal for all participants.

Support student programs and the Oakland Tech Cross Country team at Joaquin Miller Park. Choose between a five kilometer trail race or a one mile fun run through the redwood trees.

Trail running at Huddart Park in Woodside with multiple distances from a 1 mile kids dash to a 6 hour loop challenge. Swag choices, packet pickup locations, youth discounts and limited parking are provided.

Experience a scenic trail run around the Lake Chabot reservoir and hills. With distances from a 50 yard kids dash to a 50K ultramarathon there is an option for everyone at this Castro Valley event.

On November 7, 2026 the Mt. Tam Trail Run at Stinson Beach offers 10K, half marathon, 30K and 50K trail races with large elevation gains on technical dirt trails. The event is cupless and limited to 500 runners.

A November trail event at Rancho Cañada del Oro offering distances from 5K to 50K, with steep climbs, single track and two main aid stations. Runners should carry water and be aware of exposed terrain and rattlesnakes.

A flat trail event at Quarry Lakes Regional Recreation Area offering 5K, 10K, half marathon and youth races, cupless aid stations every 2–5 miles, and a USATF-certified half marathon course.

Explore the redwood forests and meadows of Santa Cruz in this 2 or 4 hour map adventure. Navigate through wilderness trails in teams of up to five to find hidden checkpoints and test your navigation skills.

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 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.

Experience the diverse landscapes of Calero County Park with race distances ranging from a kids run to a 50K ultramarathon featuring scenic single track and panoramic views.

Trail distances at China Camp State Park with coastal views, marked single-track and fire road routes, chip timing, cupless aid stations, and a 275-runner capacity.

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.