Trail Running calendar near Gilroy 2025-2026

The Diablo Trails Challenge is a running event taking place on Mount Diablo, featuring multiple race distances including a 50K, half marathon, 10K, and 5K. Scheduled for April 5, 2025, this challenge caters to runners of all experience levels, from beginners to seasoned ultra-runners. A portion of t..

The 2025 Romancing the Island Half Marathon & 10K is set to take place at Angel Island State Park in Belvedere Tiburon, California. This annual event, now in its 34th year, features a scenic loop trail that offers breathtaking views of the Golden Gate Bridge, San Francisco, and surrounding areas. Pa..

The SPASM Lake Chabot Trail Run is a diverse running event taking place at Lake Chabot Regional Park in Castro Valley, California. Scheduled for April 12, 2025, it features multiple race distances including an 8K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6..

The Rodeo Beach Rumble is an exciting running event taking place in the stunning Golden Gate National Recreation Area, near San Francisco. Participants can choose between an 8K and a Half Marathon, both offering breathtaking views of the Bay Area and historical military landmarks along the routes. T..

The Woodside Crossover is a trail running event taking place on April 12, 2025, at Huddart County Park in Woodside, California. Participants can choose from four distances: 10K, Half Marathon, 35K, and 50K, catering to runners of all skill levels. The course features scenic trails through redwood fo..

The Sierra Azul Trail Challenge is an exciting running event taking place in the scenic Sierra Azul Open Space Preserve, near San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 20 Mile, Half Marathon, 7 Mile, and 5K. This challenging race offers a unique o..

The Badger Cove Half Marathon, along with 10K and 5K events, will take place on April 19, 2025, in Livermore, California, at Lake Del Valle Regional Park. This trail race invites participants of all levels, including walkers and hikers, to enjoy the scenic emerald hills. Runners will receive custom ..

The Horseshoe Lake Trail Run is a scenic running event taking place at the Skyline Ridge Open Space Preserve in La Honda, California. Scheduled for April 20, 2025, the event features multiple race distances, including a 5-mile run, half marathon, 30K, marathon, and 50K, along with a free Kid's Run f..

The No Foolin' Foot Race is an annual running event organized by the Parks and Recreation Foundation of San Carlos, featuring a challenging 5k and 10k course through the scenic Big Canyon and Eaton Parks. Participants can also enjoy a 1-mile course designed for children aged 5-10. The event includes..

The Hacienda Hills Trail Run - Spring is an exciting trail running event taking place at Almaden Quicksilver County Park in 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, Mile, ..

The Grizzly Peak Trail Run, scheduled for May 10, 2025, in Berkeley, CA, offers a variety of race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The event starts at Lake Anza and traverses the scenic trails of Tilden Regio..

The 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 transformati..

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

The Race for Open Space is a multi-course trail running event designed to raise funds and awareness for the Big Sur Land Trust, taking place in the scenic Palo Corona Regional Park. Participants can choose from various distances, including a 1-mile fun run, a 5k, and longer options up to 35k+. This ..

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..

The Pacifica Foothills Trail Run, hosted by Inside Trail Racing, offers participants a choice of three distances: 10K, Half Marathon, and 30K, set in the scenic San Pedro Valley County Park in Pacifica, California. The event features a mix of moderately technical dirt trails that wind through the co..

Trailquake is an exciting running event taking place in Saratoga, California, featuring a half marathon, 10K, and 5K race. Set against the stunning backdrop of redwoods and pines, participants can enjoy beautiful trails while engaging in a challenging yet rewarding experience. The event welcomes run..

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

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, scheduled for May 31, 2025, in El Sobrante, California, features a scenic trail race with options for a half marathon, 10K, and 5K. Participants can enjoy breathtaking 360-degree views of the Bay Area, including landmarks like the Golden Gate Bridge and Alcatraz. The event..