Trail Running Calendar California 2025-2026

Dirt Circus - San Francisco is a free community running event held in San Francisco, California, celebrating local trail running culture. Organized by UltraSignup, this one-day festival features a social group run with options of 3.2 or 4.5 miles, welcoming all paces and encouraging participants to..

The Yosemite: Tuolumne Meadows running event offers a multi-day alpine trail running experience in the High Sierra, featuring distances from 40 to 98 miles over four days. Set amid glacier-carved domes, peaks, and pristine lakes, the course traverses rugged terrain with significant elevation gain, i..

The Broken Arrow Skyrace, held at Palisades Tahoe near Lake Tahoe, California, is a premier four-day skyrunning event featuring nine challenging distances ranging from a kids' race to a 46K ultra. Set in high-alpine terrain mostly above the tree line, the courses include steep climbs, off-trail scra..

The Orange Curtain Endurance Run takes place in Cerritos, California, featuring distances of 100K, 50K, 30K, marathon, 24-hour, 12-hour, 10K, and 6-hour events. The course is a mostly flat 10 km out-and-back loop along the San Gabriel River bike path, combining asphalt and dirt surfaces, repeated mu..

The Burney Mountain 100 is a scenic 100-mile endurance run held in Cassel, California, traversing Lassen National Forest and the Thousand Lakes Wilderness. Starting and finishing at Burney Mountain Guest Ranch, the looped course features a cumulative elevation gain of 15,000 feet, offering challengi..

Bizz Johnson's Southside Scramble is an exciting trail race set in the picturesque Susan River Canyon. Participants can choose from three distances: a 22K, a 14K, and a 7K, all starting and ending at the Hobo Camp Day Use Area. The race features a scenic loop course that includes the Bizz Johnson Tr..

The Black Mountain Trail Races, held in San Diego, CA, offer three challenging distances: 50K, 25K, and a half marathon. Set on the historic Amat Kwanyil trails of Black Mountain, an ancient extinct volcano and Kumeyaay land, the course features diverse terrain including chaparral, coastal sage scru..

The Angel Island Half Marathon, hosted by Urban Coyote Racing, takes place at Ayala Cove in Angel Island State Park, Marin County, California. This unique event offers both a half marathon and a 5-mile race, with participants enjoying stunning 360-degree views of the San Francisco Bay. The course fe..

Headwaters Trail Runs, held near Mount Shasta, California, offers three scenic trail races: 52K, 34K, and 10K. The 52K and 34K courses are challenging mountainous loops on single-track trails and forest roads, featuring significant elevation gains of approximately 8,000 and 4,000 feet respectively,..

The Red Rock Rumble is a challenging 10k trail race held in the stunning Red Rock Canyon of Topanga, California. Featuring steep climbs, rugged terrain, and breathtaking views of the Santa Monica Mountains and Pacific Ocean, the course includes 1,360 feet of vertical gain and loss, with a mix of fir..

The Golden State Trail Run in Marina, CA, is a premier summer trail running event held at Fort Ord National Monument. Offering distances of 10K, Half Marathon, 35K, and 50K, the race features diverse terrain including smooth single-track trails, sandy hills, fire roads, rolling hills, and vibrant wi..

The Into the Wild OC Trail Run takes place at Fremont Canyon via Irvine Regional Park in Orange, California. The event features a challenging 17-mile (27k) single-loop course primarily on fire roads, with an elevation gain and loss of 3,820 feet. Runners have the option to complete a shorter out-and..

The Woodmonster Trail Race is a challenging 10-mile trail run held in Oakland, California, starting and finishing at the Chabot Space & Science Center. The course features a mix of hills and single-track trails, including the notorious Woodmonster climb, known for its steep and demanding ascent. Run..

The Burton Creek Trail Run is a scenic and challenging trail running event held within Burton Creek State Park near Tahoe City, California. Participants can choose from three distances: 6K, 12K, and a half marathon. The course features miles of single-track trails winding through pine forests and hi..

The Rock the Loch Half Marathon is a running event taking place from June 27 to June 30, 2025, at Lake Chabot Regional Park in Castro Valley, CA. Participants can choose to run in person or virtually, with options for a half marathon, 10K, and 5K distances. The event promises a scenic trail run, com..

The OC Trail Runners Group Run is a free, social, and non-competitive trail running event held in Newport Coast, California, at El Moro and Laguna Coast Wilderness Park. The run emphasizes enjoying the outdoors and camaraderie, making it welcoming for all levels. Each group run features a different..

The Western States Endurance Run is a prestigious 100-mile ultramarathon held in Olympic Valley, California, starting at the site of the 1960 Winter Olympics. The course follows the historic Western States Trail, stretching from Olympic Valley to Auburn through rugged and remote terrain. Runners fac..

The Whiting Ranch Trail Races, held in Trabuco Canyon, California, offer a variety of distances including 6K, 10K, 13.2 miles (half marathon), and 30K. Set within the scenic Whiting Ranch Wilderness Park in Orange County, the courses feature challenging climbs, expansive views, and trails winding th..

Burney Basin Days is a unique running event held in Burney, California, featuring 5K and 10K trail runs along part of the Historic Great Shasta Rail Trail and scenic forest roads. The race starts at a single location, with 5K runners branching off before the 10K split, offering participants a chance..

The Bay 2 Bankers 10K is a unique running event held in San Francisco, starting near the iconic Ferry Building. Now in its 13th year, the race features a mystery theme celebrating the classic vibes of the city. Participants run through various historic neighborhoods, navigating from checkpoint to ch..