Trail Running Calendar California 2024-2025

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 going directly to the UCSF Julia Carnevale Lab. The event emphasizes commun..

The Napa Wilderness Trail Runs, hosted by Bay Trailrunners, takes place at Skyline Wilderness Park and offers a variety of trail running distances, including 40 miles, 50K, 30K, half marathon, and 10K. This event caters to all levels of runners, from seasoned ultra-marathoners to beginners. Particip..

The Gorgonio View Trail Run, part of the Spartan Trail series, takes place at the scenic Big Bear Mountain Resort in California. This event features a 10K trail run that showcases picturesque singletrack trails winding through high-altitude pine forests, offering participants stunning views of the S..

The Yosemite Running Retreat is a four-day adventure set in the breathtaking Yosemite Valley, designed for runners of all levels. Participants can explore iconic trails, enjoy scenic runs, and connect with fellow adventurers. The retreat offers a variety of route options each day, allowing attendees..

The Nanny Goat event, taking place on May 24-25, 2025, in Riverside, CA, offers a unique running experience with various race options including 6-hour, 12-hour, 24-hour, and a 100-mile challenge. Participants can run solo or as part of a relay team, aiming to complete as many laps as possible on a f..

The Placerville Path Memorial Day Run is a scenic running event held in historic Placerville, California, featuring various race distances including a Half Marathon, 15k, 10k, 5k, Mile, and a Kids Run. Participants will enjoy the beautiful El Dorado Trail, surrounded by oak trees and rolling hills. ..

The Forever Brave Half Marathon in Valencia is a vibrant running event scheduled for May 25, 2025. Participants can choose from various distances, including a 5k, 10k, 15k, and half marathon, all set on an open course designed for a fun and relaxed experience. The race features out-and-back loops wi..

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 Sonoma Coast Trail Runs, organized by SkyBreaker Racing, is a scenic running event set in the stunning Sonoma Coast State Park in Northern California. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, and Half Marathon, all featuring breathtaking views of the ..

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 against the stunning backdrop of Wildcat Canyon Regional Park, offering breathtaking views of the Bay Area. The race is d..

The Toro Park Trail Run offers a scenic running experience in Salinas, CA, featuring a variety of race distances including a Full Marathon, Half Marathon, and 10K. Set against the backdrop of the iconic Bay Area landscape, participants will navigate through rolling golden hills and shaded oak trees ..

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 courses with views of Lake Chabot, Mt. Diablo, and the San Francisco Bay.The Half Marathon ..

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

The San Diego 100 is a challenging 100-mile endurance race set in the scenic mountains of San Diego County, California. Scheduled for June 6, 2025, the event features a loop course that includes approximately 90% single-track trails, traversing notable areas such as the Pacific Crest Trail and vario..

The Shadow of the Giants 50k & 20k Fun Run is set to take place in Fish Camp, California, near Yosemite National Park. This annual event, now in its 35th year, invites participants to experience the stunning trails of the Sierra National Forest. Runners can choose between a 50k or 20k distance, with..

The Malibu Canyon Trail Races, organized by Keira Henninger, will take place on June 7, 2025, in the scenic coastal Santa Monica Mountains of Malibu, California. This challenging event features multiple race distances, including 100K, 50-mile, 50K, and 30K, allowing participants to experience the be..

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 challenging distances, including a 52-mile ultra and a 50K, featuring over 15,000 feet of elevation gain. The course takes runners t..

The Grasshopper Peak Redwoods Run, taking place in Humboldt Redwoods State Park, offers participants a choice between a 30K and a 10.5-mile race. Celebrating its 10th year, the event showcases scenic trails that ascend Grasshopper Peak and culminate in a stunning grove of ancient redwoods. Organized..

The China Camp Trail Run is an exciting running event set in the scenic China Camp State Park in San Rafael, California. Participants can choose from three distances: a 5K, 10K, and half marathon, all featuring beautiful single-track trails with stunning views of Mt. Tam, San Pablo Bay, and San Fran..

The SF Half Day is a unique running event taking place in San Francisco, featuring various race durations including 12-hour, 6-hour, and 3-hour options for both solo participants and teams. The course is a scenic one-mile loop around Crissy Field, offering stunning views of the Golden Gate Bridge an..