Trail Running calendar near Ripon 2026-2027

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.

A fall trail event at Rancho Cañada del Oro Open Space Preserve offering distances from 5K to 50K on hilly single-track and dirt roads, with aid stations, multiple water stops, strict cutoff limits, and limited parking.

Experience a flat and fast trail race through the scenic Quarry Lakes Regional Recreation Area in Fremont. Choose from a USATF certified half marathon, 10K, or 5K while enjoying views along the Alameda Creek Trail.

Navigate the redwood forests and meadows of Santa Cruz in this 2 or 4 hour map based adventure scramble. Explore the wilds in teams of up to five while hunting for 20 unique checkpoints.

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.

Trail race at Darrington Trail Head by Folsom Lake offering 5K, 10K, 18M and 36M on rocky single-track with rolling hills, aid stations, drop bags, and a 10-hour overall time limit.

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 5K and 1 mile event at San Leandro Marina with canicross teams, kids races, and proceeds benefiting animal welfare; the course is flat with mixed surfaces and free parking is available.

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 trail event in Mill Valley featuring steep stairs, coastal and forest trails out to Stinson Beach. The Dipsea Trail is run out and back then repeated for a total of four laps with on-course aid stations.

A family-friendly Thanksgiving weekend event at Quarry Lakes Regional Park offering a fast, mostly-flat half marathon, 10K, 5K and a free kids' sprint. The race supports the Alameda County Community Food Bank.

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 event at Calero County Park in San Jose featuring single-track, hills and varied terrain. Aid stations, drop-bag service for the 50K, free parking and support access at Rancho Cañada del Oro are provided.

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.

An urban single-loop ultra from Twin Peaks in San Francisco offering 50K and 50 mile options, informal aid from volunteers, a mile 25 cutoff for the 50 mile, and support for the Shoes For Runners charity.

Trail races through redwood groves at Sanborn Regional Park with a half marathon, 10K and 5K. Routes use single track trails and chip timing, and walkers and hikers are welcome.

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 multi-distance trail race at Magnolia Ranch Trailhead in Pilot Hill, CA on December 12, 2026, organized by Troy's California Trail Runs, featuring stony dirt paths, hill sections, and lake views with options from a kids run to a 50K.

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 Placerville offering distances from a kids run to a half marathon, with course markings, aid stations, race day registration and commemorative medals.