Trail Running calendar near Santa Cruz 2026-2027

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.

A multi-distance trail running event at Calero County Park featuring single track, marked courses, aid stations, and a 50K that uses repeated 13 mile loops.

Trail races of 30K, half marathon and 10K at China Camp State Park near San Rafael, with chip timing, cupless aid stations, and bay and Mt. Tam views.

An urban single loop starting at Twin Peaks that offers 50K and 50 mile routes. The fat ass style event uses volunteer aid from parked cars and includes a 4 hour 45 minute cutoff at mile 25.

Trail races through redwood groves in Sanborn Regional Park on December 12, 2026 with 5K, 10K and half marathon options, chip timing and finisher medals.

A loop course around Angel Island with panoramic San Francisco views. Options include a half marathon of two laps and a single loop 10K, limited to 400 participants and with ferry fees included in race pricing.

Trail running in Woodside, CA with 10K, half, 35K and 50K courses through redwoods and varied single track terrain.

Trail races at Lake Chabot on December 31, 2026 include a half marathon, 10K and 5K with hikers and walkers welcome.

New Year's Day races at Lake Chabot in Castro Valley on January 1, 2027, offering a half marathon, 10K and 5K with trail sections and volunteer-supported services.

The Hacienda Hills Trail Run - Winter will take place in Gold Creek on Saturday 2 January 2027. You can run between 5 and 50 kilometers.

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.

A trail race in Huddart Park near Woodside CA on January 17, 2027 offering distances from an 8K to a 50K plus a free kids 50 yard dash. Courses run through redwoods, are well marked, and feature stocked aid stations.

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.

Experience scenic bay views and varied terrain at Coyote Hills Regional Park with half marathon, 10K, and 5K distances. Enjoy a mix of dirt trails and boardwalks on courses designed with minimal climbing.

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.

The Mt. Umunhum Trail Conquest - Winter will take place in San Jose on Saturday 6 February 2027. You can run between 5 and 50 kilometers.

Fort Ord Trail Run is a two day trail event at Fort Ord National Monument in Salinas, CA offering 50K, 25K, and 10K options. The event is organized by Inside Trail Racing, uses cupless aid stations, and includes timed results.

A two day trail running event near Monterey featuring a 50 mile and 50K on February 6 and 25K and 10K on February 7. Races run on Fort Ord trails with varied terrain, multiple aid stations, drop bag support, and official timing.

Experience the unique Coastal Mountain Habitat and Pacific Coast views at this trail event in Pacifica. With distances from a kids dash to a 50K there are options for many different types of trail runners.