Trail Running Calendar California 2026-2027

Experience an obstacle course weekend at Woodward Reservoir Regional Park near San Jose. Choose from distances ranging from a 5k Sprint to a 50k Ultra on a flat course designed for personal performance.

A trail race near Silverado CA offering a 17 Miler, a half marathon and a 10K with significant elevation gain. Courses follow Maple Springs Road and truck trails and include multiple aid stations and shuttle logistics.

Nighttime lap racing near the Kings River in Reedley, California, on April 4-5, 2026, timed around the full moon. Options range from a 12K to 100 miles with 6, 12, and 24 hour formats, solo or four person relays, plus limited on-course camp..

Experience a scenic trail run through the Marin Headlands with panoramic views of the Golden Gate Bridge and Pacific Ocean. Choose between 10K, half marathon, and marathon distances on a course featuring wildflower lined trails.

Experience the scenic beauty of Mount Diablo with trail races ranging from 5K to 50K. Support local land preservation while enjoying a professional event featuring a post race BBQ in Walnut Creek.

Experience one of the largest 50 mile endurance runs in the United States. Choose between 10, 25, or 50 mile distances through scenic Northern California finishing with celebratory festivities in Auburn.

Experience the trails of Crystal Cove State Park with a 6K or 10 mile run or hike. Enjoy views of the Pacific Ocean and receive a finisher medal and event shirt as you navigate the terrain of El Moro Canyon.

Experience the scenic Merced River Canyon on hardpacked trails with two distinct options. Choose between a fast flat course along an old railroad grade or a demanding switchback hill climb with significant elevation gain.

Join this spring event at Griffith Park featuring distances from a 5k to a half marathon on a scenic dirt trail course. Enjoy a relaxed atmosphere with finisher medals and free race photos for all participants.

Santa Barbara Tough Enough The Santa Barbara Tough Enough is a 59-mile event that runs mostly along the Transverse Range ridgeline. It starts at Toro Canyon Park in Montecito and finishes at Nojoqui Falls Park near Solvang. The course is ru..

A free, social, non-competitive trail run at El Moro and Laguna Coast Wilderness Park in Newport Beach on April 4, 2026. The route is about 5 miles with roughly 500 feet of climbing and includes post-run snacks and a raffle.

A mountain trail event near Silverado, California on April 4, 2026 offering 10K, half marathon and a 17 mile loop with nearly 3,800 feet of climbing and staffed aid stations.

The Sludge Trudge 5K is a paved run/walk at North Natomas Regional Park. It's a sanctioned event with professional timing and awards for top finishers. The event is hosted for a specific community group and their guests.

Experience the scenic beauty of the Santa Monica Mountains at the 41st annual Great Race. Choose from multiple distances including a panoramic half marathon, 10K, and 5K, followed by a large post-race celebration in Chumash Park.

A pack burro race and trail run near Inyokern, California offering 5, 10, 18 and 26.2 mile courses. The event raises funds for California Breakfast Burritos and Forever Home Donkey Rescue & Sanctuary.

Experience a scenic trail run around Angel Island with panoramic views of the Golden Gate Bridge and San Francisco. This event features a hilly loop course for both Half Marathon and 10K distances with ferry transport included.

Experience California wine country at this premier trail festival featuring a Western States Qualifier 100K, a scenic 50K, and a women-only half marathon around the beautiful shoreline of Lake Sonoma.

A two day trail and gravel event at Diamond Valley Lake near Hemet offering distances from a 1 mile kids run to a 26.2 mile trail marathon, plus stroller, youth and multi lap gravel rides around the lake.

A 50K out and back trail run near Julian, CA in Anza Borrego Desert State Park. The route follows the Pacific Crest Trail, drops more than 2,000 feet into Box Canyon and returns via a more than five mile climb with a nine hour limit.

Experience a scenic trail run around Lake Chabot and the surrounding hills of Castro Valley. With distances from a 50 yard dash to a 50K ultramarathon there is an event for everyone at this regional park.