Trail Running calendar near San Pablo 2025-2026

Take on the Mt. Umunhum Trail Conquest in Almaden Quicksilver Park, offering distances from a kids run to a 50K with scenic climbs and all courses starting and finishing at the Hacienda Entrance. Finishers earn a commemorative medal.

Join Bay Breeze at San Leandro Marina Park on Feb 14, 2026 for a scenic bayside half marathon, 10K or 5K. All finishers receive custom medals and shirts and the race offers chip timing, aid stations and a remote runner option.

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 trails and rolling climbs at Lake Chabot with distances from 5K to 50K for runners of all levels. Chip timing and stocked aid stations support you, but this cupless event asks that you carry your own bottle.

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..

The The Rattlesnake Ramble will take place in Santa Venetia from Friday 13 March 2026 to Monday 16 March 2026. You can run between 5 and 21 kilometers.

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..

Run the scenic Lag Bon 10K on Sunday, March 22, 2026, along lakeside trails in Fairfax for a springtime challenge. Proceeds support Evidence Action's Safe Water Now program in honor of World Water Day.

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..

Experience scenic trail running on Mount Diablo with distances from 5K to 50K at the Diablo Trails Challenge on April 4, 2026. Enjoy community vibes and a post race BBQ while supporting Save Mount Diablo.

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.

Run the scenic Horseshoe Lake Trail Run at Skyline Ridge in La Honda on April 18, 2026, with distances from 5 mile to 50K and a free kids dash. Expect rolling ridge single track, aid stations, and a friendly festival atmosphere.

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..