Trail Running Calendar California 2024-2025

The Miwok 100K is a renowned trail ultramarathon celebrated for its stunning scenery and challenging course, featuring 11,800 feet of elevation gain. Set in the picturesque Stinson Beach area, participants enjoy breathtaking views of San Francisco, the Golden Gate Bridge, and the surrounding natural..

The Dingneng Wang event, formerly known as the PQ & GZ Trail Marathon, is a unique running experience held in memory of the beloved friend Dingneng Wang. This event encourages participants to run at their own pace without any official support, course markings, or aid stations. Runners can choose to ..

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 Angwin to Angwish Trail Run is a scenic running event set in the beautiful Napa Valley, specifically at Pacific Union College. Scheduled for May 4, 2025, the event features three challenging distances: a 1 Mile Kids Run, a 10K, and a 26K, catering to runners of all ages and abilities. This cuple..

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 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 John Wayne Grit Series - Newport Coast is a running event that features 50K, 25K, and 5K races set against the stunning backdrop of Crystal Cove State Park in Laguna Beach, California. Participants navigate hill climbs and enjoy ocean views along dirt roads and single-track trails. The event sup..

The Race for Open Space is a multi-course trail running event designed to raise funds and awareness for the Big Sur Land Trust, promoting access to parks and open spaces. Set in the scenic Palo Corona Regional Park, participants can choose from various distances, including a 1-mile fun run, a 5k, an..

The Stinson Beach/Muir Woods Marathon, Half Marathon, and 7 Mile event is set to take place on May 10, 2025, marking its 35th annual occurrence. Participants will experience a challenging trail run that begins at sea level and ascends into the scenic Muir Woods, following the iconic Dipsea trail. Th..

The Pacific Crest Trail 50 (PCT 50) is a challenging 50-mile trail run set in the scenic Cleveland National Forest, California. Scheduled for May 10, 2025, this event is part of the SoCal Ultra Grand Prix Series. The course features an out-and-back route primarily on single-track trails, with signif..

The Paiute Meadows Trail Run, organized by Lassen Land and Trails Trust, is a premier trail running event taking place in Susanville, CA. Celebrating its 30th anniversary, the event features multiple race distances including a 50K, 30K, half-marathon, and a 4.5-mile course that showcases the stunnin..

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 Born to Run Ultra Marathon Extravaganza is a unique trail running event held on a private ranch in Santa Barbara, California, from May 14 to 18, 2025. Participants can choose from various race options, including 4-day, 3-day, and 100-mile challenges, as well as shorter distances of 30, 20, and 1..

Trailquake is an exciting running event taking place in Saratoga, California, featuring a half marathon, 10K, and 5K races. 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 ru..

The Born to Adapt - Los Olivos will take place in Los Olivos on Saturday 17 May 2025. You can run between 10 and 100 miles.

The Placer Trail Running Festival is a premier spring trail running event held in Granite Bay, California, featuring a variety of race distances including 5K, 10K, and 25K. The festival caters to runners of all levels, from beginners to experienced athletes, offering a scenic and runnable course on ..

The Bishop High Sierra Ultras is an exciting running event taking place in the scenic foothills of the Eastern Sierra Nevada, featuring multiple race distances: 100K, 50 Mile, 55K, 20 Mile Fun Run, and 6K. The courses are primarily on dirt roads with some single-track trails, offering a challenging ..

The O'Neill Park Trail Races, scheduled for May 17, 2025, offer a stunning running experience in the scenic O'Neill Regional Park, located in Trabuco Canyon, California. Participants can choose from various race distances, including a 50k, marathon, 30k, half marathon, and 10k. The event emphasizes ..

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..

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 Almaden Quicksilver Park and Sierra Azul Open Space Preserve. Participants will be transported to the starting point at Mt.Umunhum, ensurin..