Trail Running calendar near Piedmont 2026-2027

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.

A trail event at Huddart Park on November 7, 2026, featuring multiple distances from a youth dash to a 6 Hour Challenge, single-track redwood trails, aid stations, chip timing, and a post-race pancake breakfast.

A trail race at Lake Chabot Regional Park in Castro Valley offering distances from an 8K and half marathon up to 50K plus a free kids 50 yard dash. The course loops the reservoir with marked routes, aid stations every 4 to 5 miles, and cupl..

Mt. Tam Trail Run offers 10K, half, 30K and 50K trail races at Mt. Tamalpais State Park with technical singletrack, chip timing, cupless aid stations, and a 500 runner capacity.

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.

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.

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.

Quad Dipsea is a 28.4 miles trail event in Mill Valley, California, with about 9,000 feet of elevation gain. The route is an out and back to Stinson Beach repeated twice and includes aid stations at Cardiac Hill, Stinson Beach, and Old Mill..

A family friendly Thanksgiving weekend run at Quarry Lakes Regional Park with a half marathon, 10K, 5K and a free short kids race. Costumes and food donations for the Alameda County Community Food Bank are encouraged.

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.

Trail running at Calero County Park offers single track, dirt paths and varied climbs across distances from a kids run to a 50K. Courses are marked with colored ribbons and include aid stations, mapped routes and free parking.

Peacock Gap Trail Run on December 5, 2026 at China Camp State Park features 10K, half marathon and 30K trail races with coastal views and varied single track terrain. The event is cupless so runners must carry their own bottle or reusable c..

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.

Trail races in the redwoods at Sanborn Regional Park offering half marathon, 10K and 5K courses on single-track trails with chip timing and finisher medals. Walkers and hikers are welcome.

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 winter trail event at Almaden Quicksilver County Park offering distances from a kids run to a 50K, marked dirt-road courses, aid stations with toilets, drop-bag service for longer races, and measurable elevation gain.

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.

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..