Trail Running Calendar California 2026-2027

Event Details The Rio Del Lago 100 Mile Endurance Run is a trail race held on Saturday, November 7, 2026, starting at Beal's Point in Folsom Lake State Recreation Area, within the Sierra Foothills of California. Course Information The 100-m..

Join the 23rd annual 5k run and walk on the Santa Fe Trail in Tulare. Support local high school scholarships while competing for age group medals and overall trophies at Live Oak Park.

Mermaid Trail Run at Huddart Park in Woodside on November 7, 2026 features multiple trail distances, a timed 6 Hour challenge and a youth dash. The course is hilly, parking has a cash fee and a pancake breakfast follows the race.

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

This November trail run takes on the iconic slopes of Mt. Tamalpais, starting at Stinson Beach. Runners can choose from four distances, from a 10K to a 50K ultramarathon, all featuring significant climbs and views. The event includes chip t..

Challenge yourself on a beautiful 5-mile loop around Lake Miramar in this 6-hour timed event. Run or walk as many laps as you like, with aid stations and a secure gear area provided. All finishers receive a medal, T-shirt, and a post-race l..

Experience the iconic scenery of Central California as you run through oak lined arroyos and rolling pastures. This trail event features steep climbs and diverse terrain with distances ranging from 10K to 50K.

The Kaweah Lake Bottom Trail Run offers a 5K and 10K race along the scenic lake bed trail. All proceeds support St. Anthony Retreat. Registration is limited and opens in May 2026.

Run through the historic streets of Avalon and the rugged interior trails of Catalina Island. Choose between a half marathon, 10K, or kids fun run featuring stunning Pacific Ocean views and island landmarks.

Experience a flat and fast trail race through the scenic Quarry Lakes Regional Recreation Area in Fremont. Choose from a USATF certified half marathon, 10K, or 5K while enjoying views along the Alameda Creek Trail.

A Thanksgiving tradition in Santa Clarita Central Park. Choose between a hilly 5K cross country course or a 1K event for younger participants. Proceeds benefit local youth track and field programs.

Celebrate Thanksgiving at Hellyer County Park with a trail race along Coyote Creek. Choose from a USATF certified half marathon, 10K, or 5K while competing for a chance to win a turkey.

Experience a Thanksgiving tradition in the Santa Monica Mountains with trail races featuring coastal views. Enjoy a festive atmosphere with a taco breakfast, beer garden, and distances ranging from a 5k hike to a competitive half marathon.

Join a mostly flat and fast half marathon, 10K, or 5K in Fremont. Support the local food bank and earn a special connector medal by completing the Double Turkey Challenge over Thanksgiving weekend.

Experience technical trail running at Black Mountain Community Park in San Diego. Choose between a half marathon, 10K, or 5K while tackling scenic hill climbs in this exclusive 300 runner event.

Run or walk on the Clovis Old Town Trail to support the Poverello House. Participants earn a full waffle breakfast at Huckleberry's with distances including a 5k and 2 mile route.

Escape the wrath of Krampus with this themed cross-country run in San Francisco or from anywhere. Choose from 5K, 10K, or a nine-mile course. All finishers get unique Krampus themed swag, including a woodallion and beer stein.

The Island View Endurance Run returns to Goleta, California in December 2026. Runners can choose from five distances, from a 12K to a 100-mile ultramarathon. Registration opens in April.

Experience a unique desert run at the Death Valley Trail Marathon. Choose between a full marathon or a half marathon across the striking trails of this famous national park destination.

Experience trail running along the scenic Millerton Lake and San Joaquin River in Friant. This event features 10k, 25k, and 50k races with regular aid stations and support for long distance runners.