Trail Running Calendar California 2025-2026

The Yuba Gold Trail Runs, set in the scenic gold country near Nevada City, CA, offers participants a choice of three distances: 50K, 35K, and a Half Marathon. The course features stunning views of the South Fork Yuba River and the historic Malakoff Diggins mining site. Early registration is availabl..

The Spooner's Cove Trail Run, held at Montana de Oro State Park in Los Osos, California, featured scenic courses of varying distances: 8K, 13K, 25K, 37K, and 50K. Runners enjoyed breathtaking views of cliffs, beaches, and the ocean while navigating trails with minimal elevation gain. The event inclu..

The Kokanee Trail Runs, a beloved event in the Lake Tahoe Basin, features a Half-Marathon, 5K, 10K, and a non-competitive Tadpole Trot for children. Set against the stunning backdrop of Fallen Leaf Lake, participants can enjoy scenic courses, unique finisher awards, and post-race refreshments. The e..

The HOKA Kodiak Ultra Marathons by UTMB is a thrilling two-day running event set in the picturesque mountain town of Big Bear Lake, California. Participants can choose from five different race distances, each offering a unique experience through diverse landscapes, including high desert and sub-alpi..

The Mile Madness Endurance Run is an exciting endurance event taking place from October 10-13, 2025, at the Sunset Whitney Recreation Area in Rocklin, CA. This unique race features a 1.05-mile loop course, primarily on dirt trails, allowing participants to choose from various timed challenges, inclu..

The Ruth Anderson Memorial Endurance Run is a prestigious running event held annually in San Francisco, California, since 1986. This endurance race features multiple distances, including 50 miles, 100 kilometers, and 50 kilometers, attracting runners of various skill levels. The course consists of a..

The Euchre Bar Massacre is a challenging running event taking place in Foresthill, CA, featuring 25 and 50-mile courses along the scenic North Fork of the American River. Participants can expect significant elevation gains, with approximately 10,000 feet for the 25-mile route and 20,000 feet for the..

Granite Head 2025 is an exciting trail running event taking place in Granite Bay, California. Participants can choose between two challenging courses: a 6.6-mile short course and an 11.2-mile long course. Each runner will receive a unique tech shirt and can enjoy post-race festivities, including com..

The Mt. Umunhum Trail Conquest-Fall is an exciting running event taking place at Almaden Quicksilver County Park in San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, Half Marathon, 7 Miler, and 5K.The race features scenic trails that lead into the Si..

The Carmel Valley Trail Race is San Diego's only trail race, set in the scenic Gonzales Canyon Open Space. Scheduled for October 11, 2025, this annual event features three race distances: 15K, 10K, and 5K, with the 15K and 10K including the challenging "Puke Hill." The race starts and finishes at So..

The Bizz Johnson event is a scenic running experience held on the Bizz Johnson Trail in Susanville, California. This fast, mostly downhill course offers various race options, including a Boston Qualifier marathon, a 50K, half marathon, 10K, and an Express half marathon. Participants will enjoy breat..

The California Fall Classic at Lake Sonoma features two challenging ultra-distance races: a 100K and a 55K, set against the stunning backdrop of wine country. Scheduled for October 18, 2025, this event is ideal for runners seeking a late-season challenge or a chance to qualify for the Western States..

The SPACEROCK Trail Race, set for October 18, 2025, takes place at the iconic Vasquez Rocks Natural Park in Southern California. This event offers a variety of race distances, including a Half Marathon+, 15K, 10K, and 5K, catering to runners of all skill levels. Participants can enjoy the stunning l..

The California Fall Classic at Lake Sonoma features two challenging ultra-distance races: a 100K and a 55K, set against the stunning backdrop of wine country. Scheduled for October 18, 2025, this event is renowned for its scenic single-track trails and vibrant community atmosphere, complete with loc..

The Diablo Summit Stomp is an exciting trail running event scheduled for October 18, 2025, in Walnut Creek, California. Participants can choose from four distances: 30K, Half Marathon, 10K, and 5K, all set on scenic dirt trails that lead into Mount Diablo State Park. The event is designed to accommo..

The Willow Hills XC is an annual cross-country race organized by the Buffalo Chips Running Club, taking place at the scenic Willow Hill Reservoir near Folsom High School. Celebrating its 15th year, this event features a challenging 5k course consisting of two loops over rolling hills. Participants c..

The California Gold Rush Trail Run - Fall is an exciting running event taking place at the historic Marshall Gold Discovery State Historic Park in Coloma, California. Scheduled for October 18, 2025, participants can choose from various distances, including a Kids Run, 1 Mile, 5K, 10K, 15K, and Half..

The John Wayne Grit Series - Lone Pine is an inspiring running event set in the scenic Alabama Hills National Scenic Area, featuring a half marathon and a 10K race. Participants will navigate dirt roads and single-track trails while enjoying breathtaking views of Mt. Whitney.This event supports the..

The Cahuilla Rez Ultra is a unique running event held on the Cahuilla Indian Reservation in Anza, California, featuring various race options including a 100-mile, 24-hour, 12-hour, 6-hour, and a half marathon. This event serves as a fundraiser for the tribe's Youth and Family Programming, promoting..

The California Fall Classic at Lake Sonoma features two challenging ultra-distance races: a 100K and a 55K, set against the stunning backdrop of wine country during the harvest season. This event is recognized as a qualifier for the prestigious Western States 100 Mile Endurance Run. Participants can..