Trail Running calendar near Napa 2025-2026

The Rio Del Lago 100 Mile Endurance Run is a premier ultramarathon held annually in the scenic Sierra Nevada Foothills of California, about 40 minutes east of Sacramento. Starting at Beal's Point in Folsom Lake State Recreation Area, the challenging 100-mile course features diverse terrain including..

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, held at Beals Point in Granite Bay, CA, is a challenging endurance running event featuring a 4.2-mile loop course along scenic singletrack trails and lakefront views. Participants must complete each loop within an hour, starting a new lap on the hour, continuing until only..

The Lake Chabot Trail Run, held in Castro Valley, California, offers a variety of distances including 8K, Half Marathon, 30K, Marathon, 50K, and a free Kid's Run for children six and under. The course begins at Lake Chabot Regional Park Marina and loops around the scenic Lake Chabot reservoir and su..

The Mermaid Trail Run in Woodside, CA, is a scenic trail running event held at Huddart Park, featuring towering redwoods and lush forest trails. Scheduled for November 8, 2025, it offers multiple race distances including 3, 6, 9 miles, a half marathon, and a unique 6-hour challenge where participant..

The Mt. Tam Trail Run is a scenic trail running event held at Stinson Beach, California, featuring distances of 10K, half marathon, 30K, and 50K. The course begins at Stinson Beach and ascends Mount Tamalpais, offering challenging climbs and stunning views before returning via trails through the Hea..

The Falcon Crest Winter Trail Challenge is a scenic trail running event held in the foothills of El Dorado Hills, California, near Folsom Lake. The race offers multiple distances including 5K, 10K, 15K, half marathon, 30K, and a trail marathon. The course features mostly single-track dirt and rocky..

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 Darrington Single Track Trail Challenge is a trail running event held near Pilot Hill, California, along the scenic shores of Folsom Lake. The race offers multiple distances including a 36-mile, 18-mile, 10K, and 5K, catering to a range of runners. Participants traverse stony dirt paths that win..

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 held at Quarry Lakes Regional Park in Fremont, California, on Thanksgiving weekend. The event features a half marathon, 10K, 5K, and a free "Little Turkeys" sprint for children. The courses are mostly flat and fast, set on the scenic..

The ZombieRunner Quarry Lakes event, held at Quarry Lakes Regional Recreation Area in Fremont, CA, offers a variety of race distances including 5K, 10K, Half Marathon, 30K, Marathon, and age-specific 5K and 10K races, plus a free Kid's Run for children 6 years and younger. The courses are flat, fast..

The Calero Trail Run - Winter takes place at Calero County Park in San Jose, California, offering a variety of distances including 50K, trail marathon, 25K, half marathon, 15K, 10K, 5K, mile, and a kids run. The course features challenging single-track trails, hills, dirt paths, oak trees, and panor..

The Peacock Gap Trail Run, hosted by Inside Trail Racing, takes place at China Camp State Park in San Rafael, California. Scheduled for December 6, 2025, the event offers three distances: 10K, half marathon, and 30K, with courses featuring scenic single-track trails, forested areas, and views of Mt...

The Hunter S. Thompson Fear & Loathing is an annual ultra running event held in San Francisco, CA, featuring 50K and 50-mile distances. Starting from Twin Peaks, the city's highest viewpoint, runners embark on a single-loop urban course that passes many iconic tourist spots.The race challenges parti..

The Summit Rock Half Marathon, held in Saratoga, California, offers runners and walkers a scenic experience through the redwood groves of Sanborn County Park in the Santa Cruz Mountains. Participants can choose from a half marathon, 10K, or 5K race, all featuring breathtaking single-track trails and..

The Folsom Lake Point to Point Trail Half Marathon is a scenic trail race held in El Dorado Hills, California, near Sacramento. The 13.1-mile course is predominantly single track (95%) with some dirt road (5%), running alongside Folsom Lake on the Southside Trail. Runners experience a mix of gentle..

The Hark the Herald Half Marathon & 10K is an annual running event held at Angel Island State Park near Belvedere Tiburon, California. The race features a scenic, hilly loop trail around Angel Island, offering stunning panoramic views of the Golden Gate Bridge, San Francisco, Alcatraz Island, the Ea..

The Brazen New Year's Eve event, held at Lake Chabot in Castro Valley, California, offers runners and walkers the opportunity to participate in a half marathon, 10K, and 5K trail races. This festive race provides a scenic course through the trails of Lake Chabot, welcoming participants of all levels..