Trail Running calendar near Gilroy 2025-2026

The Golden State Trail Run, organized by Inside Trail Racing, is a summer ultramarathon event held at Fort Ord National Monument near Monterey, California. The race features four distances: 50K, 35K, half marathon, and 10K, offering participants a scenic tour of diverse terrain including rolling hil..

The Angel Island Half Marathon is a unique running event set in the picturesque Angel Island State Park, offering stunning 360-degree views of the San Francisco Bay. Participants can choose between a half marathon and a 5-mile race, both of which include a ferry ride from Tiburon. The event combines..

The Rock the Loch Half Marathon is a running event taking place from June 27 to June 30, 2025, at Lake Chabot Regional Park in Castro Valley, CA. Participants can choose to run in person or virtually, with options for a half marathon, 10K, and 5K distances. The event promises a scenic trail run, com..

The Bay 2 Bankers 10K and 5K in San Francisco is an annual race celebrating the city's vibrant neighborhoods and classic vibes. Participants navigate a course starting near the Ferry Building, using a custom map to find checkpoints and answer multiple-choice questions. The event fosters community en..

The Rancho Hills Trail Run - Summer is a challenging trail running event held in the scenic foothills of the South Bay Area, specifically within the Rancho Cañada del Oro Open Space Preserve in Morgan Hill, California. The race features a variety of distances, including 50K, trail marathon, 30K, hal..

The San Lorenzo River Trail Run is an exciting running event set in Santa Cruz, California, featuring 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. Participants will experience a scenic course that winds thr..

The Calero Hills Trail Fest is a trail running event held at Calero County Park in San Jose, California. Participants can choose from various distances, including marathon, 30K, half marathon, 10-mile, 10K, and 5K courses. The race features challenging terrain with single track trails, hills, and di..

The Rodeo Valley Trail Run is a scenic trail race held in the Marin Headlands near Sausalito, California, within the Golden Gate National Recreation Area. The event offers four race distances: 8K, half marathon, 30K, and 50K, featuring challenging steep pitches, lofty downhill sections, and stunning..

The Skyline 50K Endurance Run is one of California's oldest and most celebrated 50K races, taking place annually in August at Lake Chabot Marina in Castro Valley. This event is designed for both novice and experienced ultrarunners, featuring a scenic course that loops through the East Bay Regional P..

The Mount Madonna Challenge is an annual running event held in Gilroy, California, featuring a half marathon, 10K, and 5K races. Established in 1975, the event promotes trail running and supports local high school athletes through scholarships. The South Valley Running Club initially managed the rac..

Bear Creek 2025 is an exciting running event taking place in Lafayette, California, featuring a Half Marathon, 10K, and 5K races. Set against the scenic backdrop of Briones Regional Park, participants can expect a challenging course with hills, perfect for those seeking a unique trail experience rat..

The Almaden Hills Trail Run - Summer will take place in San Jose on Saturday 16 August 2025. You can run between 5 and 50 kilometers.

The Redwood (Summer) Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a 5-mile run, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The course winds through the scenic Redwood..

The 2025 Angel Island Half Marathon and 10K, hosted by Envirosports, marks its 35th annual event on August 23, 2025, at Angel Island State Park in Belvedere Tiburon, California. Participants will enjoy a scenic loop trail that offers stunning views of the Golden Gate Bridge, San Francisco, and Alcat..

The Inside Trail Santa Cruz Trail Run is a challenging outdoor race held at Henry Cowell Redwoods State Park, featuring 10K, half marathon, and 30K distances. Participants traverse scenic, technical dirt trails through towering redwoods, crossing rivers, and climbing ridges, with aid stations every..

The Run-De-Vous will take place in San Martin on Friday 29 August 2025. You can run between 26 and 100 miles.

The SPASM Crystal Springs Trail Run is an exciting running event taking place in Huddart Park, Woodside, CA. Scheduled for August 31, 2025, it features multiple race distances including an 8K, Half Marathon, 35K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. Participa..

The Stevens Creek Striders Reservoir Run offers a scenic trail running experience in Cupertino, CA, featuring a Half Marathon, 11K, and a Lollipop Loop charity run. Participants can enjoy the beautiful trails of Stevens Creek County Park, with varying elevations and challenging terrains suitable for..

The Diablo Trail Run, scheduled for September 7, 2025, in Clayton, California, offers a variety of race distances including a 4-mile, 10-mile, half marathon, marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The event takes place in the scenic Mount Diablo State Park, fea..

The South Hills Single Track Trail Run - Summer is an exciting trail running event taking place at Calero County Park in San Jose, CA. Participants can choose from various distances, including a challenging 50K, Trail Marathon, 16 Mile, Half Marathon, 9 Mile, 10K, 5K, and a Kids Run. The course feat..