Trail Running calendar near San Francisco 2025-2026

The Lake Sonoma 100K and 55K are challenging ultramarathon races held in California's wine country, offering scenic courses through rugged terrain and picturesque views of Lake Sonoma. Scheduled for October 18, 2025, the events feature two distances that navigate miles of single-track trails, making..

The California Fall Classic at Lake Sonoma features two challenging ultra-distance races: a 100K and a 55K, set against the stunning backdrop of wine country. Scheduled for October 18, 2025, this event is ideal for runners seeking a late-season challenge or a chance to qualify for the Western States..

The Diablo Summit Stomp is an exciting trail running event scheduled for October 18, 2025, in Walnut Creek, California. Participants can choose from four distances: 30K, Half Marathon, 10K, and 5K, all set on scenic dirt trails that lead into Mount Diablo State Park. The event is designed to accommo..

The Napa Fall Wine Country Marathon is a scenic running event taking place in Bothe-Napa Valley State Park, California, on October 25, 2025. This 33rd annual marathon features a challenging course with lush trails, hills, and streams, making it a rewarding experience for participants. The event incl..

The Haunted Hills 10K in Redwood City is a unique running event scheduled for October 25, 2025. Participants can form teams of 1 to 5 and embark on a fun-filled adventure through the festively decorated neighborhoods. The course features approximately 36 checkpoints for the 10K, where runners will a..

The Oakland Hills Trail Run is an exciting outdoor running event taking place in the scenic Redwood Regional Park and EBMUD Trails in Oakland, California. Participants can choose from three distances: 10K, Half Marathon, and 35K, all set against a backdrop of stunning redwood forests and diverse wil..

The ZombieRunner Halloween event is a festive running competition taking place in San Jose, CA, featuring a variety of race distances including a 5K, 10K, Half Marathon, and Marathon, along with youth categories and a free Kid's Run. Participants are encouraged to dress in Halloween costumes for a c..

The Almaden Hills Trail Run - Fall is an exciting running event taking place in the scenic Almaden Quicksilver park in San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, Half Marathon, 8 Mile, 10K, and 5K. The course features a mix of 60% dirt roads a..

The Oakland Tech 5km Fundraiser Race and 1 Mile Fun Run/Walk is set to take place at Joaquin Miller Park, supporting the Oakland Tech Cross Country and Track Team. This event features a scenic 5K trail run and a 1-mile fun run/walk, designed to cater to both competitive runners and leisurely partici..

The Lake Chabot Trail Run is a diverse running event taking place at Lake Chabot Regional Park in Castro Valley, California. Scheduled for November 8, 2025, it features multiple race distances including a 50K, Marathon, 30K, Half Marathon, 8K, and a free Kid's Run for children aged 6 and under. The..

The Rancho Hills Trail Run - Fall is an exciting trail running event set in the picturesque Rancho Cañada del Oro Open Space Preserve in Morgan Hill, California. Scheduled for November 8, 2025, participants can choose from various distances, including 5K, 10K, 8 Mile, 10 Mile, Half Marathon, 30K, Tr..

The Mt. Tam Trail Run, organized by Inside Trail Racing, offers a thrilling experience for trail runners of all levels. Set in the scenic Mt.Tamalpais State Park, the event features four race distances: 10K, Half Marathon, 30K, and 50K. Participants will enjoy breathtaking views as they navigate cha..

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.

The Zoom Turkey Trot is a festive running event taking place in San Jose, California, featuring multiple race options including a 5K, 10K, and Half Marathon, as well as youth categories and a free Kid's Run. Participants can enjoy a scenic run along the Coyote Creek trail on Thanksgiving morning, wi..

The Quad Dipsea will take place in Mill Valley on Saturday 29 November 2025.

The Quarry Turkey Half Marathon is a family-friendly running event taking place on November 29, 2025, at Quarry Lakes Regional Park in Fremont, California. Participants can choose from a half marathon, 10K, or 5K race, along with a free Little Turkeys Race for children. The event encourages Thanksgi..

The ZombieRunner Quarry Lakes event is a running competition held at the scenic Quarry Lakes Regional Recreation Area in Fremont, California. Participants can choose from various distances, including a 5K, 10K, Half Marathon, 30K, and Marathon, along with youth categories and a free Kid's Run. The c..

The Calero Trail Run - Winter is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 25K, Half Marathon, 15K, 10K, 5K, and a Kids Run. The course features scenic single tracks, hills, and dirt pa..

The Hunter S. Thompson Fear & Loathing will take place in Midtown Terrace on Sunday 7 December 2025. You can run between 50 and 50 miles.

The Hark the Herald Half Marathon & 10K is a scenic running event taking place on December 13, 2025, at Angel Island State Park in Belvedere Tiburon, California. Celebrating its 37th annual edition, the race features a challenging loop trail that offers stunning views of the Golden Gate Bridge, San..