Trail Running Calendar California 2026-2027

Run through the scenic and historic trails of Anza Borrego Desert State Park. Choose from a 50K, marathon, or half marathon, starting and finishing at the Stagecoach Trails RV Resort. This is the event's ninth year.

Experience the natural beauty of the California Central Coast at the Santa Barbara Nine Trails. Choose between 17 mile and 35 mile distances for an organized trail running event in Santa Barbara.

Event Overview The Ruck a Chuck 50K is a trail running event on the Western States Trail near Foresthill, California. The course is an out-and-back route starting at the Drivers Flat staging area and heading towards Foresthill. The route co..

Experience California's oldest trail marathon on beautiful Catalina Island. Run through the scenic island conservancy with distances ranging from a kids 1K to a full marathon featuring 4300 feet of elevation gain.

Course and Location The Marin Ultra Challenge (MUC) is a trail race taking place in Marin County. The 11th edition of the event will be held on Saturday, March 14, 2026. The journey starts on Rodeo Beach and the courses traverse the Marin H..

The Singletrack Stampede is a 22k and 10k trail run through the scenic Las Virgenes Canyon near Calabasas. Runners navigate a cross-country course with switchbacks, creek crossings, and expansive views. The event includes a finisher medal,..

Course Overview The Santa Barbara Nine Trails 35 Mile Endurance Run is a point-to-point course that covers much of the Santa Barbara front country trail system. The route starts at the Jesusita Trailhead on San Roque Road and goes to the Ro..

This trail run along Folsom Lake features a scenic, mostly single-track course. Runners can choose from distances ranging from a 1 mile to a 50K. All finishers will receive a medal.

Choose your challenge at the Pirate's Cove timed endurance run, set on a scenic 2-mile loop around Lake Cuyamaca in the mountains. The event offers 6-hour, 12-hour, and 24-hour distances starting at 8 a.m., with on-site dining and supplies..

The Big Alta is a scenic trail running weekend in Marin County, California. It offers three challenging distances: a 100K point to point, a 50K loop, and a 28K loop, all summiting high points for vast Bay Area views.

Choose from three trail distances—50K, 25K, or 10K—starting from the Cool Staging Area in California. Each course features significant elevation change and a generous 10-hour cutoff for the longer races. All participants get a race shirt, a..

Experience the breathtaking hills and canyons of Southern California with distances ranging from 10k to a 50k ultra. Run through lush spring landscapes and conquer challenging ridgelines with panoramic valley views.

Run through the scenic single track trails of Bothe Napa Valley State Park. Choose from marathon, half marathon, or 10K distances on this popular course. Participation is limited to 300 runners for the annual trail event.

Experience the beauty of Redwood Regional Park in Oakland with distances ranging from 5 miles to a 50K ultramarathon. Run through towering redwood groves and along scenic ridges in this spring trail event.

Event Overview The 15th Annual Spirit of Benny 10K/5K Fun Run and Walk is a fundraiser supporting non-profit organizations that help seriously ill children and their families in El Dorado County, California. For this final edition, proceeds..

Explore the trails of Whiting Ranch Wilderness Park in Orange County. Choose from four distances, from a 6k to a 30k, on courses with views through oak woodlands. The event is well-supported and offers participant gear.

Experience a scenic trail run through oak lined canyon paths in Camarillo while supporting low cost horse riding programs. This inaugural event features a fast 5K and a Kiddie K for young participants.

Join the Pioneertown Half Marathon and 10K on March 21, 2026, in the high desert near Joshua Tree. This rugged, hilly course offers stunning views of the Sawtooth Mountains while supporting cancer research. Participants receive a series shi..

Test your endurance at Monserate Mt. Preserve with 6 and 12 hour trail running options. Complete as many loops as possible solo or as a team while enjoying local trails and a fully stocked aid station.

Experience the trails of Clayton at the Diablo Summit Challenge. Run a 22.5 km course starting at Mitchell Canyon Road and support local community initiatives through this outdoor adventure.