Trail Running Calendar California 2025-2026

The Badger Cove Half Marathon, along with 10K and 5K events, will take place on April 19, 2025, at Del Valle Regional Park in Livermore, California. This race, part of the Brazen Racing Ultra Half Series, offers participants a scenic run through the emerald hills of Lake Del Valle. All runners will..

The Go Wild! Peninsula event offers a thrilling 4-hour trail and wilderness scramble in San Carlos, CA, set against a backdrop of vibrant spring wildflowers and expansive forest views. Participants, in teams of 1 to 5, will navigate using a custom map to locate up to 24 checkpoints along scenic trai..

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 Mendocino Coast 50K is an exhilarating trail running event set in the stunning landscapes of Northern California. Participants will experience a diverse course that includes scenic views of rivers, the ocean, majestic redwoods, and beautiful waterfalls. The race culminates along the picturesque..

The Horseshoe Lake Trail Run is an exciting 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 Half Marathon, 30K, 5-mile run, and a free Kid's Run for children aged 6 and..

The Canyons Endurance Runs by UTMB® is a premier trail running event held in Auburn, California, known as the "Endurance Capital of the World™️." Scheduled for April 25-26, 2025, the event features multiple race distances, including a new 100-mile course, alongside 100km, 50km, and 25km options. Par..

The Saddleback Marathon, scheduled for April 26, 2025, is a premier trail running event held in Black Star Canyon, Silverado, California. This annual race features a full marathon, half marathon, and 10K, each offering unique challenges and scenic views of the Cleveland National Forest. Participants..

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 Belgian Waffle Run is an exciting 5,000-meter race held at the Del Mar Polo Fields, designed for runners of all levels. Participants can enjoy a spirited atmosphere, whether they're aiming for a personal best or sporting fun costumes. The event emphasizes the joy of movement and community, featu..

The Las Virgenes Canyon Ultra Trail Races, scheduled for April 26, 2025, offers a variety of distances including 6K, 12K, 30K, 54K, and 84K, catering to both novice and experienced runners. Set in the scenic landscapes of Upper Las Virgenes Canyon in Southern California, participants can expect a 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 Hotshot Half is a scenic 14.5-mile trail run taking place in Camptonville, CA, along the beautiful Bullards Bar Reservoir. Organized by the Tahoe Hotshots, this event serves as a fundraiser in memory of fallen firefighter Mike Kelly. The course features 95% single track and includes three fully..

The Brown's Ravine Half & Full Marathon is an exciting running event taking place in Folsom, California, on April 26, 2025. The race features a scenic course that is 95% single track and 5% dirt road, running alongside the picturesque Folsom Lake. Participants can choose between a half marathon, whi..

The Ramona Wine Country 5K is an exciting running event held at BackCountry Gardens in Ramona, California. Participants can choose between a two-loop 5K course or a single loop option, featuring trails, hills, and natural obstacles. The event also includes a Charity Beer Mile, where participants dri..

The Badwater Salton Sea is an ultra-running event scheduled for April 26-27, 2025, in Borrego Springs, California. This challenging race spans 81 miles from Salton City, which is below sea level, to Palomar Mountain, featuring a total elevation gain of over 9,000 feet. Participants compete in teams..

The Paseo de Mariposa is a family-friendly trail running event held in Mariposa, California, set against the scenic backdrop of the Sierra Nevada foothills. Participants can choose from three distances: a 5K, an 8(ish)K, and a challenging 12K Trail Run. The event promotes health and wellness, encour..

The Northeast Trail Run is a community-focused 5K event taking place in Griffith Park, Los Angeles, aimed at supporting the Northeast Division Youth Programs. Scheduled for April 27, 2025, the event features both adult and youth categories, promoting physical activity while fostering essential life..

The Aut2Run for Autism is a running event scheduled for April 27, 2025, at California State University Channel Islands in Camarillo, CA. This annual event features multiple race options, including a 15K Hero Run, 10K Trail Race, 5K Run/Walk, 1 Mile Run/Walk, Fun-K, and a Virtual Race, allowing parti..

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..

Coyote Two Moon is an exciting running event scheduled for May 2-4, 2025, in the scenic Los Padres National Forest, Ojai, California. Participants can choose from various distances, including 100 miles, 100K, 55K, 30K, and 10K, each featuring significant elevation gains. The event promises a challen..