Trail Running calendar near Lucas Valley-Marinwood 2025-2026

Run through towering redwoods at Sanborn Regional Park with half marathon, 10K and 5K options plus a remote runner choice. Expect scenic climbs, narrow single track trails, professional chip timing and custom finisher medals.

Experience a scenic loop around Angel Island with views of the Golden Gate and Alcatraz at the 37th Hark the Herald, offering a half marathon and a hilly 10K. Limited to 400 runners, includes ferry transport and finisher swag.

Experience scenic single track trails under redwood canopy and along ridgelines at the Woodside Ramble. Distances from 10K to 50K offer a challenging, festive trail day; the event is sold out.

Ring out the year with Almost New Year's Eve at scenic Lake Chabot in Castro Valley on 12/27/25. Trail routes for runners, walkers and hikers include 5K, 10K and half marathon distances with free post race photos.

Celebrate New Year’s Day with scenic loop races at Lake Chabot, from half marathon to 10K, 5K and remote options on rolling trail terrain. Enjoy free race photos and earn a New Year Mega Medal if you also ran Brazen New Year’s Eve.

Run scenic trails through Hacienda Hills at Almaden Quicksilver Park with distances for every level, from kids runs to ultramarathons. Take in Bay Area views, use on course aid and day of race registration, and earn a commemorative finisher..

Run through towering redwoods and fern filled trails at Huddart Park with distances from 8K to 50K plus a free kids run. Well stocked aid stations and scenic single track make this a perfect challenge for trail lovers.

Run through redwood and fern groves at Huddart Park at the Crystal Springs Trail Run on Sunday, January 18, 2026, with distances from a fun 8K and kids dash to challenging marathon and 50K ultras. Aid stations, custom medals and race suppor..

Explore twisty single track and coastal views along Montara Mountain at the Pacifica Foothills Trail Run in San Pedro Valley Park on January 24, 2026. Pick a 10K, half marathon, or rugged 30K and soak up lively aid stations and friendly tra..

The Golden Gate Trail Classic will take place in San Francisco from Saturday 24 January 2026 to Sunday 25 January 2026. You can run between 15 and 50 miles.

Run along the San Francisco Bay at Coyote Hills Regional Park in Fremont with half marathon, 10K and 5K options plus a remote entry. Trails, boardwalks and paved paths make for a scenic, low climb course and walkers are welcome.

Run the 48th Jed Smith Ultra Classic on January 31, 2026 in Sacramento along a scenic mostly flat loop on the American River Parkway. Choose 50 miles, 50K, marathon, 30K or half marathon and enjoy a long sleeve tech shirt and handcrafted fi..

Conquer scenic natural surface trails and the Mt Umunhum ascent at Trail Conquest Winter in Almaden Quicksilver County Park, with distances from a kids run to 50K. Race day registration, aid stations and a commemorative medal for finishers.

Run scenic trails along the Pacific and Marin Headlands with sweeping views of San Francisco and the Golden Gate Bridge. Distances range from 8K to 50K and include a free kids dash, making this a perfect coastal race for every runner.

Join the JW House Hope Run at Vasona Lake Park for a scenic 5K or 10K that welcomes runners, walkers, and teams. Family and stroller friendly, this community event raises funds to support families facing medical crises.

Soak up San Francisco Bay views at Bay Breeze, a mostly flat road and trail event with half marathon, 10K, 5K and a remote runner option. Walkers and hikers are welcome on the scenic waterside course.

Explore scenic, moderately technical trails at Lake Chabot Regional Park with distances from 5K to a 50K ultra, chip timed and capped at 500 runners. Aid stations, cupless racing, and sturdy prizes make this a must for trail lovers.

Take on coastal ridgelines at the Montara Mountain Trail Run in Pacifica on Feb 21, 2026 with distances from a 10K to 50K plus a kids dash. Enjoy rugged single track, ocean views, medals for finishers and fully stocked aid stations.

Run scenic trails around Angel Island from a lively 5 mile loop to a challenging 15 mile climb up Mount Livermore, with custom medals and pre registered shirts. Ferries from Tiburon set the scene for a memorable island race day.

Run or hike scenic Skyline Ridge in La Honda, CA with 50K, 21K and 10K options across rolling ridges and forested trails. All entry fees support the Bay Area Ridge Trail so your miles help protect local open space.