Trail Running calendar near Santa Cruz 2025-2026

The Mt. Tam Wild Boar Half Marathon and 10K is an annual running event held at Mt. Tamalpais State Park in Mill Valley, California.Celebrating its 37th year in 2025, the race features scenic coastal ridge trails with stunning views of the Pacific Ocean and surrounding landscapes. Participants can ch..

The No Foolin' Foot Race, organized by the Parks and Recreation Foundation of San Carlos, invites participants to explore the scenic trails of San Carlos in its third annual event. Runners can choose between a challenging 5k and 10k course, featuring significant elevation gains, or a 1-mile course f..

The 2025 Animal Run features a 10k race, along with a 5k, Canicross, and a 2-mile walk, all taking place at 900 Dornan Drive, Richmond, CA. This event serves as a fundraiser for Rancho Compasión, promoting a community of athletes dedicated to animal kindness and environmental awareness. Participants..

The Miwok 100K is a renowned trail ultramarathon celebrated for its stunning scenery, featuring views of San Francisco, the Golden Gate Bridge, and the majestic redwoods. The course, which includes 11,800 feet of elevation gain, combines single-track trails and dirt roads, making it both challenging..

The Hacienda Hills Trail Run - Spring is an exciting trail running event set in the scenic Almaden Quicksilver County Park near San Jose, California. Scheduled for May 3, 2025, this event features nine different race distances, including a 50K, Trail Marathon, 30K, Half Marathon, 9 Mile, 10K, 5K, Mi..

The Grizzly Peak Trail Run is an exciting running event taking place at Lake Anza in Tilden Regional Park, Berkeley, CA. Scheduled for May 10, 2025, it features multiple race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under...

Nitro Trail 2025 is an exciting running event taking place at Point Pinole Regional Shoreline Park in San Pablo, California. Participants can choose from three race distances: a half marathon, 10K, and 5K, making it suitable for runners of all levels. The event celebrates the park's transformation f..

The Race for Open Space is a trail running event organized by the Big Sur Land Trust, taking place in the scenic Palo Corona Regional Park. Scheduled for May 10, 2025, this event features multiple race options, including a 1-mile Fun Run, 5K, 12K, 25K, and a challenging 35K+ course. Participants wil..

The Quicksilver Endurance Runs, taking place in San Jose, CA, features both 50K and 100K races on scenic, hilly trails. Celebrating its 40th edition, the event offers participants a chance to run through beautiful oak forests and meadows, with stunning views of the Santa Clara Valley and Santa Cruz..

The Stinson Beach/Muir Woods Marathon is a challenging trail running event set to take place on May 10, 2025. Celebrating its 35th annual edition, participants can choose from a marathon, half marathon, or a 7-mile race. The course features scenic trails through the iconic Muir Woods, including stee..

The 13 Mile Trail Race Top Down is a half marathon event taking place in San Jose, California, on May 17, 2025. The race features a scenic course that traverses two beautiful parks: Almaden Quicksilver Park and Sierra Azul Open Space Preserve. Participants will be transported to the starting point a..

Trailquake 2025 is an exciting running event taking place in Sanborn Park, Saratoga, California, featuring a half marathon, 10K, and 5K races. Participants will enjoy beautiful trails through redwoods and pines, with options suitable for runners and walkers of all levels. The event promises breathta..

Run for Amma is an annual charity running event held in Los Gatos, California, aimed at raising funds and awareness for cancer research. The event features three race distances: 50K, 30K, and 10K, with all registration proceeds benefiting the UCSF Julia Carnevale Lab. Participants can enjoy scenic t..

The Pacifica Foothills Trail Run, taking place at San Pedro Valley Park in Pacifica, CA, offers participants a choice of three distances: 10K, Half Marathon, and 30K. Set against the stunning backdrop of the Santa Cruz Mountains, the event features scenic dirt trails that wind through coastal foothi..

The Calero Trail Run - Spring is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including a 50K, marathon, 25K, half marathon, 15K, 10K, 5K, and a kids run. The course features scenic single tracks, hills, and dirt paths, m..

The Wildcat Half Marathon, organized by Brazen Racing, is set to take place on May 31, 2025, in El Sobrante, California. This event features a Half Marathon, 10K, and 5K, all set within the scenic Wildcat Canyon Regional Park, offering breathtaking views of the Bay Area. The race is designed for all..

The 2025 Lake Chabot Trail Challenge features a Half Marathon and a 5K run, taking place in Castro Valley, California. This annual event, now in its 41st year, is popular among trail runners and offers scenic views of Lake Chabot, Mt. Diablo, and the San Francisco Bay.The Half Marathon course is a h..

The Cinderella Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a Half Marathon, Marathon, 8K, 30K, 50K, and a free Kid's Run for children aged 6 and under. Set in the scenic Joaquin Miller and Redwood Regional parks, partici..

The Toro Park Trail Run is an exciting running event set in the picturesque Toro Park, located in Salinas, CA. Participants can choose from three race distances: a Full Marathon, a Half Marathon, and a 10K, all featuring the stunning scenery of the Bay Area, including rolling golden hills and smooth..

The Mt Umunhum Ultras is an exciting trail running event set in the scenic Santa Clara Valley and Sierra Azul Open Space Preserve. Participants can choose from various distances, including a challenging 52-mile ultra, a 50K, a trail marathon, and shorter races like the 30K, half marathon, 9-mile, 10..