Trail Running Calendar California 2025-2026

The Encinitas Beach Run, presented by Excelerace, is a unique running event held at Moonlight Beach in Encinitas, California. Scheduled for October 25, 2025, the race takes place on the sand at low tide between Moonlight Beach and Grandview. Participants can choose between 5k and 10k distances, with..

The Range of Light Trail Races, held in Bishop, California, offer four distances: 5k, 10k, 33k, and 50k, showcasing the scenic Eastern Sierra trails and dirt roads. The event benefits Inyo County Search and Rescue and features courses with varied terrain, including steep single tracks and fast dirt..

The Haunted Hills 10K in Redwood City is a unique nighttime running event featuring a spooky, festive atmosphere. Participants run through wickedly decorated neighborhoods, navigating approximately 36 checkpoints along the 10K course. Runners, in teams of one to five, engage in a fun challenge by an..

Caspers Trail Races, held in San Juan Capistrano, California, offer a variety of distances including 10K, 13.2 miles, 30K, marathon, and 50K. This Orange County event features well-marked and well-supported trail courses, promising a great running experience. Participants can expect quality race swa..

The Oakland Hills Trail Run, held at Redwood Regional Park in Oakland, CA, offers challenging trail races in three distances: 10K, half marathon, and 35K ultramarathon. Set in a serene redwood forest with towering 150-foot coast redwoods, the course features technical dirt trails and fire roads with..

The Napa Fall Wine Country Marathon, Half Marathon & 10K is an annual trail running event held at Bothe-Napa Valley State Park in Saint Helena, California. Now in its 33rd year, the race features challenging courses through lush single-track trails with hills, streams, and rocky terrain, offering a..

Machete Trail Madness 200 is an ultramarathon event held at Lake Perris, California, featuring challenging distances of 100 miles, 50 miles, and 10 miles. The course consists of a tough 10-mile loop with 2,300 feet of elevation gain per lap, offering scenic views of the lake and surrounding mountain..

The ZombieRunner Halloween event is a festive running competition taking place in San Jose, CA, featuring a variety of race distances including a 5K, 10K, Half Marathon, and Marathon, along with youth categories and a free Kid's Run. Participants are encouraged to dress in Halloween costumes for a c..

The Griffith Park Trail Marathon is a scenic trail running event held in Griffith Park, Los Angeles, starting at the Merry-Go-Round Lot 1. The marathon features an out-and-back course that includes a mix of beautiful single-track trails and double-track fire roads, with a highlight being the summit..

The Wildwood Canyon Trail Run takes place in Wildwood Canyon State Park, Yucaipa, California, featuring a scenic 3.6-mile loop course with nearly 600 feet of vertical gain per loop. Participants have 8 hours to complete as many loops as possible, showcasing the park's rugged canyons, meadows, and oa..

The Roosters Backyard Ultra will take place in San Diego on Saturday 1 November 2025.

The Rio Del Lago 100 Mile Endurance Run is a premier ultramarathon held annually in the scenic Sierra Nevada Foothills of California, about 40 minutes east of Sacramento. Starting at Beal's Point in Folsom Lake State Recreation Area, the challenging 100-mile course features diverse terrain including..

The Almaden Hills Trail Run - Fall takes place in Almaden Quicksilver Park, located in the scenic Almaden Valley near San Jose, CA. This trail running event offers a variety of distances including 50K, Trail Marathon, 30K, Half Marathon, 10K, 8 Mile, and 5K races. The course features a mix of approx..

The Oakland Tech 5km Fundraiser Race and 1 Mile Fun Run/Walk is set to take place at Joaquin Miller Park, supporting the Oakland Tech Cross Country and Track Team. This event features a scenic 5K trail run and a 1-mile fun run/walk, designed to cater to both competitive runners and leisurely partici..

The NorCal Backyard Ultra, held at Beals Point in Granite Bay, CA, is a challenging endurance running event featuring a 4.2-mile loop course along scenic singletrack trails and lakefront views. Participants must complete each loop within an hour, starting a new lap on the hour, continuing until only..

The Catalina Island Half-Marathon & 10K is a scenic trail running event held in Avalon, California on Catalina Island. The half-marathon covers 13.1 miles, starting in Avalon and passing the historic Wrigley Mansion before entering the island's rugged interior with challenging climbs. Runners are re..

The Lake Chabot Trail Run, held in Castro Valley, California, offers a variety of distances including 8K, Half Marathon, 30K, Marathon, 50K, and a free Kid's Run for children six and under. The course begins at Lake Chabot Regional Park Marina and loops around the scenic Lake Chabot reservoir and su..

The Mt. Tam Trail Run is a scenic trail running event held at Stinson Beach, California, featuring distances of 10K, half marathon, 30K, and 50K. The course begins at Stinson Beach and ascends Mount Tamalpais, offering challenging climbs and stunning views before returning via trails through the Hea..

The Mermaid Trail Run in Woodside, CA, is a scenic trail running event held at Huddart Park, featuring towering redwoods and lush forest trails. Scheduled for November 8, 2025, it offers multiple race distances including 3, 6, 9 miles, a half marathon, and a unique 6-hour challenge where participant..

The Rancho Hills Trail Run - Fall is a challenging trail running event held at the Rancho Cañada del Oro Open Space Preserve in Morgan Hill, California. The race offers a variety of distances ranging from 5K to 50K, including 10K, 8 Mile, 10 Mile, Half Marathon, 30K, and a Trail Marathon. The course..