Trail Running calendar near San Rafael 2025-2026

Run rugged coastal trails at Pacifica Foothills Trail Run in San Pedro Valley Park on Jan 24, 2026 with 30K, half marathon and 10K. Chip timed, cupless race with scenic Montara Mountain climbs and stocked aid stations.

Run scenic trails at Coyote Hills Regional Park in Fremont on Jan 31, 2026, with half marathon, 10K, 5K and remote options. Enjoy marsh and bay views, boardwalks and stocked aid stations plus downloadable GPX files.

Event overview The Mt. Umunhum Trail Conquest - Winter is a trail running event held at Almaden Quicksilver County Park, Hacienda Entrance, 21785 Almaden Rd, San Jose, CA 95120. The event offers multiple distances: 50K Marathon 30K 1/2 Mar..

Event details Bay Breeze is scheduled for February 14, 2026, at San Leandro Marina Park (14001 Monarch Bay Dr, San Leandro, CA). The event offers these distances: Half marathon 10K 5K All races start and finish at San Leandro Marina Park...

Enjoy challenging coastal mountain trails at the Montara Mountain Trail Run in Pacifica, with distances from 10K to 50K plus a Kid's Run. Scenic single track, stocked aid stations, and great trail views make it a must for trail lovers.

Take on scenic technical trails at Lake Chabot Regional Park in Castro Valley with distances from 5K to 50K. Aid stations, chip timing and a cupless format make this a true trail challenge for all levels.

Zoom Angel Island is a trail running event on Angel Island, accessible via chartered ferries from Tiburon, California, offering spectacular views of Marin County and San Francisco. Distances include 5 miles, 10 miles, 15 miles, plus a Kids..

Tackle iconic Marin Headlands and Mt Tamalpais on rugged coastal trails in the Marin Ultra Challenge, with 50 Mile and 50K options. Limited to 450 runners, the race offers live tracking, full aid stations, and finisher medals.

Event overview The Napa Valley Trail event takes place on Saturday, March 21, 2026, at Bothe-Napa Valley State Park in Saint Helena, California. The race is limited to 300 participants. Distances offered: Marathon Half Marathon 10K The ev..

Redwood (Spring) Trail Run is held at the Chabot Space & Science Center in Oakland, California, featuring multiple distances from 5 miles up to 50K, plus a Half Marathon, Marathon, 30K, a 5K, and several youth events. The course winds throu..

Enjoy a scenic trail run along the historic Western Pacific route at Quarry Lakes in Fremont on March 28, 2026, with half marathon, 10K, 5K or remote entries. Brazen Racing welcomes runners, walkers and hikers on a mostly flat dirt and grav..

Join the Bad Ass Backyard Ultra in Rio Linda on March 28 2026, a repeated 4.16 mile loop starting each hour. Keep running until you are the last person to complete a loop and claim victory.

Event details The 41st annual Golden Gate Headlands race takes place on Saturday, April 4, 2026, at the Marin Headlands Visitor Center and Fort Barry area in Mill Valley, California. The event offers multiple distances: Marathon Half Marat..

Run scenic trails around Mount Diablo with distances from 5K to 50K, including a Brazen Ultra Half Series half marathon. Brazen Racing hosts this April event that benefits Save Mount Diablo and celebrates the region's protected open space.

Event overview The 35th annual Romancing the Island event takes place on April 11, 2026 at Angel Island State Park, Belvedere Tiburon, CA. The race offers two distances: Half Marathon - completes the island loop twice 10K - single loop aro..

Experience scenic trails at Lake Sonoma with three races on April 11: a Western States qualifier 100K, a challenging 50K, and the women only Trail Sisters Half Marathon. Volunteer aid stations, a Wilson Winery finish bottle, and weekend fes..

Explore Napa's wild side on scenic single track and fire roads around Mount St Helena, starting and finishing at the Calistoga Fairgrounds Great Lawn. Choose from 10K to 50K distances, with UTMB Index status for select races.

Event overview Badger Cove Half Marathon/10K/5K 2026 takes place on April 18, 2026, at Del Valle Regional Park in Livermore, California. The event includes on-site race options at Lake Del Valle and a remote runner option. Hikers and walker..

Event The 2026 Mt. Tam Wild Boar Half Marathon & 10K takes place on April 25, 2026, at Mt. Tamalpais State Park in Mill Valley, California. The event is limited to 300 participants. Distances offered: Half Marathon 10K Course and logi..

Run the Miwok 100K from Stinson Beach through scenic Marin single track trails and big climbs. Run solo or as a four person relay; this UTMB index race and Western States qualifier champions sustainability.