Trail Running Calendar California 2024-2025

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..

Yosemite: Tuolumne Meadows is an immersive running adventure set in the stunning Sierra Nevada, taking place over several days in July 2025. Participants will explore a network of trails through breathtaking alpine meadows, glaciated peaks, and serene lakes. The event includes multiple running optio..

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 San Lorenzo River Trail Run is an exciting running event taking place 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 enjoy a scenic course that winds..

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

The Muir Woods Trail Run, taking place in Stinson Beach, CA, offers a challenging experience for both novice and experienced mountain runners. Participants can choose from three distances: 10K, Half Marathon, and 30K. The course features steep climbs, breathtaking views of Stinson Beach and the Paci..

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 Peak is an exhilarating trail 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 ..

The Harding Hustle is an exciting trail running event set in the scenic Cleveland National Forest, California, featuring three challenging distances: 50K, 30K, and 15K. Participants will navigate the Harding Truck Trail, which offers stunning views, steep climbs, and thrilling descents. The race is ..

Tough Mugu is a challenging trail running event set in Southern California's scenic coastal mountains, offering participants a chance to experience stunning views while competing. The event features a 25k and a 10k race, both supported by fully stocked aid stations. Runners can earn handcrafted fini..

The SoCal Summer 6K/12K, organized by Pasadena Running Company, is a vibrant trail running event set in Pasadena's scenic Lower Arroyo Park. Participants can choose between two distances: a 6K and a 12K trail run, both featuring mixed-use and single-track trails. The event includes early packet pick..

The Calero Hills Trail Fest is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including a marathon, 30K, half marathon, 10 miler, 10K, and 5K. The course features challenging ascents and descents through scenic oak groves, ..

The Great Shasta Rail Trail event features a variety of running distances, including 50K, 30K, Burro 30K, Burro 10K, and 10K, all set against the stunning backdrop of Mt. Shasta. This relatively flat, out-and-back course is ideal for both beginners and seasoned runners looking to achieve personal re..

Mountain Tiger Donner Summit is an exciting 11.5-mile point-to-point mountain trail race set in the stunning Donner Summit area of Tahoe, California. The event features a challenging course that includes four summits, technical trails, and smooth fire roads, with a total elevation gain of 3,290 feet..

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 a unique experience through the stunning Sierra Nevada landscape. The 100K race featur..

The Folsom 100 is an exhilarating 100-mile ultramarathon that takes place around Folsom Lake, California. Scheduled for August 1, 2025, this challenging race features a point-to-point course with a single out-and-back section. Participants have 34 hours to complete the loop, which includes stunning ..

The Riley Park Trail Races, set in the scenic Thomas F. Riley Wilderness Park in Coto de Caza, CA, offers a variety of race distances including a 30k, half marathon, 10 miler, 10k, and 5k, making it a family-friendly event suitable for all levels of runners. Participants can enjoy beautiful trails f..

The Angeles Crest 100 Mile Endurance Run, established in 1986, is a prestigious ultramarathon held in the San Gabriel Mountains of California. This challenging race features a point-to-point course that spans 100 miles, with elevations ranging from 1,135 to 9,300 feet. Participants navigate steep cl..

The Skyline 50K Endurance Run is one of the oldest continuously running 50K races in the United States, taking place annually in August at Lake Chabot Marina in Castro Valley, California. This event is designed for both first-time ultrarunners and seasoned veterans, featuring a scenic course that lo..

Bear Creek Run is a trail running event taking place in Lafayette, California, featuring a Half Marathon, 10K, and 5K on August 9, 2025. The courses are known for their challenging hills, offering participants a scenic experience through Briones Regional Park. Hikers and walkers are welcome, making ..