Trail Running Calendar California 2025-2026

The Western States 100 Endurance Run is a prestigious ultramarathon that covers a challenging 100-mile course along the historic Western States Trail, stretching from Olympic Valley, California, to Auburn. This iconic race, known for its demanding terrain, features significant elevation changes, inc..

The Whiting Ranch Trail Races, set in the scenic Whiting Ranch Wilderness Park in Trabuco Canyon, California, offers a variety of race distances including 6k, 10k, half marathon, and 30k. Participants can enjoy challenging climbs and breathtaking views while running through beautiful trails surround..

The Bay 2 Bankers 10K is an exciting running event set in San Francisco, featuring a unique mystery theme that celebrates the city's classic vibes. Participants will start near the iconic Ferry Building and navigate through various neighborhoods using a custom map. Teams of 1 to 5 will answer multip..

Burney Basin Days is an exciting running event held in Burney, CA, featuring a 5K, 10K, and a unique burro race. Participants will experience the scenic beauty of the Historic Great Shasta Rail Trail and the stunning landscapes of Burney Basin. Runners will start together, with 5K participants takin..

The Rancho Hills Trail Run - Summer is an exciting running event set in the scenic Rancho Cañada del Oro Open Space Preserve in Morgan Hill, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, Half Marathon, 10 Mile, 8 Miler, 10K, and 5K. This challenging race f..

The Signal Peak Trail Runs is an exciting running event taking place in Bear Valley, California, featuring two challenging courses: a 50K and a 24-mile run. Participants will experience stunning views of Bear Valley, Lake Spaulding, and the surrounding canyons, with the 50K course summiting Signal P..

Yosemite: Tuolumne Meadows is an immersive running adventure set in the stunning Sierra Nevada, taking place over five days. Participants will explore a variety of trails, including breathtaking views of alpine meadows, glaciated peaks, and serene lakes. The event features multiple running options e..

The Badwater 135 Ultramarathon is renowned as the world's toughest foot race, covering a grueling 135 miles (217 km) from Death Valley to Mt. Whitney, California. This extreme endurance event features a challenging course with a total elevation gain of 14,600 feet (4,450 m) and a time limit of 48 ho..

The Red Rock Wilderness Trail Run is a scenic 5k event taking place in the beautiful Red Rock Wilderness area, specifically at the Augustine Staging Area in Silverado, California. The course features a mix of fire roads and single track trails, with an elevation gain of 300 feet. Participants can ex..

The Muir Woods Trail Run, taking place in Stinson Beach, CA, offers a thrilling experience for both novice and experienced mountain runners. Participants can choose from three distances: 10K, Half Marathon, and 30K, each featuring challenging terrain and stunning views of the Pacific Ocean and surro..

The Mt. Baldy 5000 is a challenging 5K race set to take place on the slopes of Mt. Baldy Resort.Designed for runners of all abilities, the course features a significant uphill climb, offering stunning views throughout. Participants can look forward to a vibrant afterparty at the Top of the Notch, co..

Elder Creek Night Runs is an exciting running event set in the beautiful desert landscape of Anza, California, under a full moon. Participants can choose from various distances, including 50K, 30K, 13 Miler, and 9 Miler, all on a scenic 4.6-mile looped course featuring single track trails and dirt r..

The Dirty Dozen Run, organized by Brazen Racing, is a unique endurance event taking place at Point Pinole Regional Shoreline. Scheduled for July 12, 2025, participants can choose to run for 12, 6, or 3 hours, either solo or in teams of two or three. The race features a scenic 3.37-mile loop primaril..

The San Lorenzo River Trail Run is an exciting running event set in Santa Cruz, California, featuring multiple race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. Participants will experience a scenic course that winds thr..

The Peak is an exhilarating running event featuring a 50K, marathon, and half marathon, set against the stunning backdrop of Cuyamaca Peak in San Diego County. Participants will experience challenging climbs and descents, with the 50K and marathon routes featuring a significant elevation gain of 10,..

The Harding Hustle is an exciting trail running event set in the scenic Cleveland National Forest of Orange County, California. Participants can choose from three challenging distances: 50K, 30K, and 15K, all of which traverse the Harding Truck Trail, offering stunning views and steep climbs. The ev..

Tough Mugu is a challenging trail running event set in Southern California's scenic coastal mountains, offering participants a chance to experience breathtaking views while competing. The event features a 25k and a 10k race, both of which are fully supported with aid stations. Runners can earn handc..

The Blood, Sweat & Beers Trail Run is an exciting running event set in the picturesque American River Canyon. Participants can choose between two challenging courses: a Long Course of 10.5 miles and a Short Course of 5.9 miles, both featuring a mix of rugged terrain, including rocks, roots, and dirt..

The SoCal Summer 6K/12K, organized by Pasadena Running Company, is a vibrant trail running event set in Lower Arroyo Park, Pasadena. Participants can choose between two distances: a 6K and a 12K trail run, both designed to showcase the area's beautiful interconnected trails. The event features a wav..

The Lost Sierra Endurance Race invites participants to conquer the Sierra Buttes in Downieville, California, on July 26, 2025. Runners can choose from three challenging distances: 100K, 50K, and 25K, each offering unique scenic routes through the Sierra Nevada mountains. The 100K features an out-and..