Trail Running calendar near Calistoga 2025-2026

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 Rio Del Lago 100 Mile Endurance Run is a premier ultramarathon event held in the scenic Sierra Foothills of California, starting at Beal's Point. Scheduled for November 1, 2025, this challenging race features a diverse course that includes trails, paved paths, and stunning views of Folsom Lake...

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 NorCal Backyard Ultra is an endurance running event taking place at Folsom Lake’s Beals Point from November 7 to 10, 2025. This unique race format challenges participants to complete a 4.2-mile loop every hour until only one runner remains, with a separate Mini Last Person Standing event for tho..

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

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 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 Thanksgiving weekend at Quarry Lakes Regional Park. Scheduled for November 29, 2025, the event features a half marathon, 10K, and 5K, along with a free "Little Turkeys" race for children. Participants are encouraged t..

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 Hunter S. Thompson Fear & Loathing event is a renowned ultra-running race held annually in San Francisco, CA, celebrating its 41st edition in December 2025. Participants can choose between a 50K and a 50-mile course, with no entry fee required.The race features a mix of city streets and parallel..

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..

The Brazen New Year's Eve event offers participants the chance to run a half marathon, 10K, or 5K at Lake Chabot in Castro Valley, California. This event is designed for runners of all levels, including hikers and walkers, making it an inclusive experience. It serves as a perfect opportunity to fini..

The Brazen New Year's Day event in 2026 offers participants a chance to kick off the new year with invigorating races at Lake Chabot in Castro Valley, California. Runners can choose from a half marathon, 10K, or 5K, making it suitable for various fitness levels. The event encourages participants to..

Coyote Hills Run is an exciting running event taking place on January 24, 2026, at Coyote Hills Regional Park in Fremont, California. Participants can choose from various distances, including a 5K, 10K, and half marathon, with registration fees varying based on the chosen event and registration peri..

Bay Breeze 2026 is a scenic running event taking place at the San Leandro Marina Park, featuring a half marathon, 10K, and 5K races. Known for its picturesque views of San Francisco and the Bay, the course offers a mostly flat, easy trail ideal for both seasoned runners and beginners. Participants c..

The Bad Ass Backyard Ultra, held at Dry Creek Parkway in Rio Linda, CA, is a unique running event where participants complete 4.16-mile loops within one hour. Runners must be ready at the start corral for each new loop, which begins on the hour. The event, originally a casual gathering in 2023, beca..