Trail Running Calendar California 2025-2026

The Santa Cruz Trail Run, scheduled for August 23, 2025, takes place in the scenic Henry Cowell Redwoods State Park, featuring a stunning landscape dominated by giant redwoods. Participants can choose from three race distances: 10K, Half Marathon, and 30K. The course includes a mix of single-track t..

The Trail Run at Sly Park, scheduled for August 23, 2025, offers a variety of race distances including 5K, 10K, 8 Mile, Half Marathon, 17 Mile, Trail Marathon, and 50K. Set in the scenic Sly Park Recreation Area in Pollock Pines, California, the event features trails around Jenkinson Lake, surrounde..

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 Double Dipsea is a challenging 13.7-mile trail run that takes place annually, starting at Stinson Beach, California. First held in 1970, this race is known for its unique handicapped start format, where slower runners begin first, creating a dynamic environment of constant passing on narrow trai..

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 Mount Baldy Run to the Top is a renowned trail race taking place on September 1, 2025, marking its 60th edition. This challenging event spans over 7 miles, starting at an elevation of 6,000 feet and culminating at the summit of Mt. Baldy, which stands at 10,064 feet, featuring a significant elev..

The Gypsum Canyon Wilderness 5k is a trail running event set in the scenic Gypsum Canyon Wilderness in Anaheim, California. Participants will navigate a 5k course featuring fire roads and single track trails, with an elevation gain of 350 feet. The race includes one aid station providing water and e..

The Noble Canyon 50K and 15K is an annual trail running event held in the scenic mountains of east San Diego, California. Scheduled for September 6, 2025, the race features a challenging course primarily consisting of runnable single-track trails, offering participants stunning views of the natural..

The China Peak Trail Run, scheduled for September 6, 2025, at the China Peak Mountain Resort in Lakeshore, California, offers a thrilling experience for trail running enthusiasts. Participants can choose from three distances: 12km, 25km, and 50km, all featuring scenic dirt roads and single-track tra..

The Tanri Lake Race, taking place in Miramonte, CA, features both a Relay Race and an Individual Race on September 6, 2025. The Relay Race consists of teams of three runners, each completing four 5-mile loops at an elevation of approximately 6,000 feet. The Individual Race allows participants to run..

The Mendocino Running Festival is a vibrant outdoor event held in Mendocino Woodlands Park, a National Historic Landmark. This festival features a variety of races, including a half marathon, 10K, and timed events of 6 and 12 hours, all set against the stunning backdrop of ancient redwoods. Particip..

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 Mammoth Bar Trail Runs, organized by Skybreaker Racing, will take place in the scenic Mammoth Bar OHV Area within the Auburn State Recreation Area, known for its challenging terrain and stunning views of the American River Canyon. Scheduled for September 7, 2025, the event features three race di..

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 Berkeley Trail Adventure is an exciting running event set in the scenic Tilden Regional Park and Wildcat Canyon in Berkeley, CA. Scheduled for September 13, 2025, participants can choose from various distances, including 10K, half marathon, 35K, and 50K. The course features a mix of shaded trail..

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..

Mammoth Trail Fest is a multi-day running event taking place in Mammoth Lakes, California, from September 18 to 21, 2025. This festival celebrates trail running with a variety of races, including the Mammoth Triple, 50K, 26K, tenkay, and Dragon Ascent, catering to runners of all levels. The event em..

The Double Peak Challenge is an exciting outdoor running event held annually in San Marcos, California, featuring a 10k, 5k, and a Kids Trail Trot. Celebrating its 10th year, the event invites participants to tackle a challenging course that includes a significant elevation gain, reaching the summit..

The Gold Rush Growler Trail Runs feature a 10-mile and a 5K race, taking place at Granite Beach, Folsom Lake SRA. Participants can enjoy scenic courses along the shoreline and single-track trails. The event includes new courses for 2025, with awards for top finishers and age group categories.Each co..

The Rocky Ridge Trail Half Marathon is set to take place on September 20, 2025, at the scenic Las Trampas Wilderness in San Ramon, California. This challenging event features a half marathon, along with 10K and 5K options, catering to various skill levels. The half marathon is known for its rugged t..