Trail Running calendar near Lake Sonoma 2025-2026

The 27th Annual Matt Yeo Memorial Aggie XC Open, presented by the HOKA Aggies, is held at Radke Martinez Regional Shoreline in Martinez, California. The meet features three 4.1-mile cross-country races for Women, Masters Men, and Open Men,..

Event details The 2025 Napa Fall Wine Country race is the 33rd annual trail event at Bothe-Napa Valley State Park in Saint Helena, California. It is scheduled for October 25, 2025 and is limited to 300 participants. Distances offered: Mara..

The 39th Golden Gate Park XC Open, held at Lindley Meadow (30th Ave & JFK Dr) in San Francisco's Golden Gate Park, is a 5k cross-country race over grass, dirt, and rolling hills. It features Masters Women 40+ and Masters Men 40+ along with..

Take on Mt Tam's scenic but rugged trails above Stinson Beach with distances from 10K to a challenging 50K. Expect technical singletrack, aid stations, finisher medals and a sold out field with a waitlist for this popular November race.

The Golden Gate Trail Classic will take place in San Francisco from Saturday 22 November 2025 to Sunday 23 November 2025. You can run between 15 and 50 miles.

Quad Dipsea : November 29, 2025 The Quad Dipsea is a trail ultramarathon held in Mill Valley, California. It is the 42nd running and covers 28.4 miles with about 9,000 feet of total ascent. The course is an out-and-back from Old Mill Park t..

The Krampus Cross Country is a festive running event held in San Francisco, California, featuring live and virtual options. Participants can choose from three distances: a 5K, 10K, or the challenging Naughty Nine Miler. The live races start..

Experience scenic single track trails and rolling climbs at China Camp and Harry Barbier Memorial Park in San Rafael on December 6, 2025. Choose a 30K, half marathon, or 10K in a friendly cupless event with on course aid.

Event overview The Hunter S. Thompson Fear & Loathing is an annual urban ultrarun in San Francisco, held as the 41st running on December 7, 2025. The event is presented by Haight Ashbury Ultra Society, Zombie Runners, and Fat Ass Runner..

Event details The Hark the Herald race returns for its 37th annual running on Saturday, December 13, 2025, at Angel Island State Park near Belvedere Tiburon, CA. The event is limited to 400 participants. Distances offered: Half Marathon -..

Hit the coastal trails at Rodeo Beach in Sausalito on February 7, 2026 with options from a kids dash to a rugged 50K. Enjoy scenic single track, full aid stations, finisher medals and a welcoming finish line atmosphere.

Experience panoramic Bay views on the hilly trails of Angel Island with 5, 10, and 15 mile options and a free kids dash. Finishers earn custom medals and pre registered runners receive shirts; a charter ferry from Tiburon is required.

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 the Marin Ultra Challenge through the Marin Headlands, Mt Tamalpais and Muir Woods with sweeping coastal views and cathedral redwoods. Choose 50K or 50 mile trail courses with live tracking, aid stations and a festive finish at Rodeo..

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..

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.

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..

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..

Join TERREX Lake Sonoma for a weekend of scenic trails with a Western States qualifier 100K, a 50K and the Trail Sisters women only half. Enjoy lake views, big climbs, camping and cupless aid stations with shuttles to Lone Rock.

Run rugged Napa Valley trails from Calistoga into Robert Louis Stevenson State Park and up Mount St. Helena on technical single track and fire road. Choose 50K, 35K, half marathon or 10K out and back for big views and serious climbs.