Trail Running Calendar California 2025-2026

The China Peak Trail Run, held at China Peak Mountain Resort in Lakeshore, California, offers a challenging mountain trail running experience in the Western Sierra Range. Scheduled for September 6, 2025, the event features three race distances: 12km, 25km, and 50km. The courses are 100% dirt, combin..

The Stevens Creek Striders Reservoir Run, held in Cupertino, CA, offers a scenic trail running experience with distances of a half marathon (13.2 miles), 11K, and a 2.5-mile Lollipop Loop charity run/walk. The course features shaded single-track trails and open vistas, including challenging steep as..

The Tanri Lake Race, held in Miramonte, California, is a challenging running event set at an elevation of about 6,000 feet. It features two race formats: a relay race and an individual race, both on a 5-mile loop course. The relay involves teams of three runners, each completing four loops in a set..

The Diablo Trail Run, held at Diablo State Park in Clayton, California, offers a variety of trail running events including 4-mile, 10-mile, half marathon, marathon, 50K, and a free kids' 50-yard dash for children six and under. The courses feature scenic mountainous terrain with spectacular views of..

The Mammoth Bar Trail Runs, hosted by Skybreaker Racing, is a new trail running event held in the Mammoth Bar OHV Area within Auburn State Recreation Area, Auburn, California. Scheduled for September 7, 2025, the event features three race distances: a half marathon, 10K, and 5K. The courses are know..

The South Hills Single Track Trail Run - Summer, held at Calero County Park in San Jose, CA, offers a variety of distances including 50K, trail marathon, 16-mile, half marathon, 9-mile, 10K, 5K, mile, and a kids run. The course features challenging single track trails, hills, dirt paths, oak trees,..

The Berkeley Trail Adventure is a scenic trail running event held in Berkeley, California, within Tilden Regional Park and Wildcat Canyon. It offers four race distances: 10K, half marathon, 35K, and 50K, featuring technical dirt trails, fire roads, and some asphalt sections. The course showcases sha..

Mammoth Trailfest, held in Mammoth Lakes, California, is a multi-day trail running event set in the stunning Eastern Sierra. The festival features a variety of races including the challenging 50K and 26K single-loop mountain courses with significant elevation gains, the Dragon's Back Ascent climbing..

The Double Peak Challenge is a distinctive running event held in San Marcos, California, featuring a challenging 10K race, a 5K fun run, and a Kids Trail Trot. The 10K course is known for its demanding elevation gain of 1,176 feet, culminating at Double Peak's summit at 1,558 feet, offering runners..

The Rocky Ridge Trail Half Marathon is a challenging trail race held in the scenic Las Trampas Wilderness near San Ramon, California. Scheduled for September 20, 2025, the event features a half marathon, 10K, and 5K distances. Known for its tough terrain and significant elevation changes, the half m..

The Run 4 The Miracle will take place in Fresno on Saturday 20 September 2025. You can run between 5 and 10 kilometers.

J Treequinox is a 12-hour ultra running event held on a private 20+ acre desert property near downtown Joshua Tree, California. The race features a 1-mile loop course, making it accessible for runners new to ultra distances who can take the challenge one lap at a time. Participants enjoy a well-stoc..

The Mt. Umunhum Marathon, Race to the Top and Down, is a challenging trail marathon held in Almaden Quicksilver County Park, San Jose, California. The race begins at the Hacienda Entrance and ascends to the summit of Mt.Umunhum, offering runners a demanding climb followed by a thrilling descent back..

The Gold Rush Growler Trail Runs, held at Granite Beach in Folsom Lake State Recreation Area, feature scenic 10-mile and 5K trail races along shoreline and single-track trails. The 10-mile course includes paved park roads, secret trails, and varied terrain with aid stations offering water, electroly..

That's No Moon Trail Races take place in the rugged Cleveland National Forest and Santa Ana Mountains near Silverado, California. The event offers challenging trail runs in three distances: 50 miles, 50K, and 30K. Participants navigate demanding courses with significant elevation gains, exposed ridg..

No Name 5025 is a trail running event held at Cheeseboro National Park in Woodland Hills, California. It features a challenging 50k ultramarathon, along with a half-marathon, 5k, and a kids’ 2k fun run. The course offers diverse terrain, including runnable ascents, winding singletracks, steep fire r..

The Cheeseboro Canyon Trail Run, held in Agoura, California within Cheeseboro Canyon National Park, offers a variety of trail running distances including a challenging 50K ultra marathon, a half marathon, a 5K trail run, and a new kids 2K fun run. The courses feature diverse terrain with runnable as..

The Sunset & Cider Trail Races, held in Auburn, California's scenic American River Canyon, offer three trail running distances: 50K, 13 miles, and 5 miles. The courses feature mostly runnable single-track trails with some short neighborhood road sections and varying elevation gains—3,875 ft for the..

The Spartan Trail - San Jose Trail Challenge takes place at Sanborn County Park in Saratoga, California, nestled on the eastern slopes of the Santa Cruz Mountains. This scenic event offers three race distances: 10K, 21K (half marathon), and 50K, featuring well-groomed but steep and challenging trail..

The Pacifica Summit Run is a scenic trail running event held at San Pedro Valley State Park in Pacifica, California. It offers two race distances: a 10K and a half marathon. Runners experience challenging switchbacks and enjoy stunning postcard views of the Pacific Ocean coastline from the tallest m..