Trail Running Calendar California 2025-2026

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..

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 Rancho Hills Trail Run - Summer is a challenging trail running event held in the scenic Rancho Cañada del Oro Open Space Preserve near Morgan Hill, California. The race offers multiple distances including 50K, marathon, 30K, half marathon, 10-mile, 8-mile, 10K, and 5K, catering to a wide range o..

The Badwater 135 Ultramarathon, hosted by AdventureCORPS, is globally recognized as the world's toughest foot race. It covers a grueling 135 miles (217 km) non-stop from Badwater Basin in Death Valley, California—the lowest point in North America at 282 feet below sea level—to Whitney Portal at 8,36..

The Red Rock Wilderness Trail Run is a 5K (3.4 miles) race held at the Red Rock Wilderness in Silverado, California, starting and finishing at the Limestone Canyon/Augustine Staging area. The course features a mix of fire roads and single-track trails with an elevation gain of 300 feet, offering a m..

The Dirty Dozen Run is an annual trail running event held at Point Pinole Regional Shoreline in Richmond, California. It features 12-hour, 6-hour, and 3-hour endurance races on a scenic 3.37-mile loop composed mostly of dirt fire trails. The course offers expansive shoreline views, including multipl..

The Peak is a challenging trail running event held near Julian, California, featuring 50K, marathon, and half marathon distances. The course primarily follows single-track trails with stunning mountain views, including a climb up Cuyamaca Peak, the second highest point in San Diego County. Runners f..

The Mt. Baldy 5000 is a challenging 5K mountain race held on the slopes of Mt. Baldy Resort near Los Angeles.The 3.1-mile course features nearly 1,500 feet of elevation gain, primarily uphill on fire roads with good footing, offering spectacular views and a tough climb suitable for runners of all le..

Elder Creek Night Runs is a unique nighttime trail running event held near Anza, California, on the scenic lands of the Cahuilla Band of Indians. The race features distances of 9 miles, 13 miles (half marathon), 30K, and 50K, all run on a 4.6-mile loop combining single track trails and open dirt roa..

The Muir Woods Mountain Challenge, held in Mt. Tamalpais State Park near Stinson Beach, CA, offers trail runs of 10K, half marathon, and 30K distances. The course features a challenging 2,000-foot climb early on, scenic ridge-line views of Stinson Beach and the Pacific Ocean, and technical single-tr..

The San Lorenzo River Trail Run, held in Santa Cruz, California, offers a scenic trail running experience through towering 1500-year-old Coastal Redwoods, stream canyons, meadows, and diverse forest landscapes. The event features multiple race distances including 10K, Half Marathon, 30K, Marathon, 5..

The Harding Hustle is a challenging trail running event held in the scenic Cleveland National Forest and Santa Ana Mountains near Silverado, California. It offers three distances: 50K, 30K, and 15K, all primarily on the Harding Truck Trail, featuring steep climbs, exhilarating descents, and breathta..

Tough Mugu is a challenging trail running event held at La Jolla Group Campground in Point Mugu State Park, Malibu, California. It features two main distances: a 25k and a 10k course, both showcasing Southern California's stunning coastal mountain trails. The 25k course covers 15.75 miles with 2,427..

Blood, Sweat & Beers is a trail running event held in Auburn, California, nestled in the scenic American River Canyon. The race offers two challenging distances: a Long Course of 10.5 miles with 2,471 feet of elevation gain and loss, and a Short Course of 5.9 miles with 863 feet of elevation change...

The SoCal Summer 6K/12K, hosted by Pasadena Running Company, is a trail running event held at Lower Arroyo Park in Pasadena, California. Scheduled for a summer Friday evening, it offers two distance options: a 6K (3.9 miles) and a 12K (7.8 miles, two loops of the 6K course). The course features mixe..

The Calero Hills Trail Fest, held at Calero County Park in San Jose, CA, offers a variety of trail running distances including a marathon, 30K, half marathon, 10 miler, 10K, and 5K. The courses feature challenging ascents and descents through scenic old oak groves, single track trails, and dirt path..

The Lost Sierra Endurance Race, held in Downieville, California, offers three challenging trail running distances: 25K, 50K, and 100K. Set against the scenic Sierra Buttes, the 100K is an out-and-back course featuring rugged single-track trails, significant elevation gain (10,780 ft), and five aid s..

The Great Shasta Rail Trail run, held near McCloud, California, offers multiple distances including 10K, 30K, and 50K, as well as burro races. The course is relatively flat with excellent footing, featuring out-and-back routes that showcase stunning views of Mt. Shasta and crisp mountain air.This sc..

Mountain Tiger Donner Summit is an 11-mile point-to-point mountain trail race held on Donner Summit in Tahoe, California. The challenging course features four summits and ridge running along Sugar Bowl and Royal Gorge trails, with 3,300 feet of elevation gain starting at 7,000 feet altitude. The rac..

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..