Trail Running Calendar California 2026-2027

Trail races at Huddart Park, King's Mountain and Bear Gulch offer measured distances from a 50 yard kids dash to a 50K, with fees listed per distance and registration opening November 11, 2025.

TANRI Lake Race 2026 at YMCA Sequoia Lake offers relay, 10K, and a 10-hour individual event on a looped course at about 6,000 feet, with prizes, a Tanri hat, and a Saturday dinner included with registration.

Dirt Circus Los Angeles is a one day community run and festival on August 29, 2026 at A Snail's Pace Running Shop in Chino Hills. The event features a social group run on nearby trails, an expo with brand booths, and a raffle.

A hilly loop race around Angel Island with Half Marathon and 10K options, limited to 400 participants and including the required ferry to the island.

A steep 4.75 mile up and down run, hike, or walk on San Anselmo's Bald Hill that finishes downtown with live music and a t shirt. The third annual event benefits local nonprofits and includes town endorsement.

The inaugural Apple City 5k at Pinto Lake County Park in Watsonville on 30 August 2026 offers a 5k on gentle, scenic trails and a kids 1k around the soccer fields. Half the event funds support the Pajaro Valley Education Foundation.

A PA/USATF cross country race of 3.4 miles at Spring Lake Regional Park in Santa Rosa on August 30, 2026. The 33rd annual Empire Open features rugged dirt trails, three races including a masters division, and a $1,500 prize purse for USATF..

Trail races in Pine Valley, California on September 5, 2026 offering 50 kilometer and 15 kilometer options. Both races have fixed cutoffs, marked trails with frequent ribbons, staffed aid stations, and specific rules for pacers, crews, and..

A community run in Tahoe Vista with a 5K and a 1 mile fun run across grass fields, paved bike paths and park trails. Parking and a participant hat are included, and proceeds support a park nonprofit.

A memorial stair-climb in San Diego to honor the 403 emergency responders lost on September 11, 2001, raising funds for FirefighterAid with a 2026 goal of $120,000.

Experience the inaugural Colby Mountain Trailfest in Butte Meadows featuring scenic 5k 12k and 24k courses. Support local trail maintenance and search and rescue efforts while exploring the newest trail systems in Northern California.

A community 3 mile fun run in Norwalk on September 5, 2026, organized by Cerritos High School alumni to support the school and honor local Dairy Valley history. In-person and virtual options are available.

Trail races at Mammoth Bar OHV Area in Auburn State Recreation Area on September 6, 2026. Options include a 13.1 mile half marathon and a 6.2 mile 10K, each with notable elevation gain and staffed aid stations.

Experience the natural scenery of Mount Diablo State Park through a variety of trail races. Runners can select distances ranging from 4 miles to a 50K with spectacular views of the San Francisco Bay Area.

Community races at Thousand Hills Ranch include a 5K, 10K and Kids Mile on mixed dirt and paved ranch roads. The event benefits Central Coast Athletics Foundation and 17 Strong and features a victory lap, festival, awards, and team competit..

A 6.45 miles trail race in Annadel State Park organized by the Empire Runners Club, held in early September with staggered age and gender starts, limited to 100 runners and awards for the top 13 finishers.

The 61st Mt Baldy Run to the Top on September 7, 2026 is a fundraising mountain trail race in the Angeles National Forest covering about 7 miles with 4,000 feet of ascent to the 10,064 foot summit, with proceeds aiding local services.

Experience the trails of China Camp State Park with a selection of distances including a 5K 10K and Half Marathon. Participants enjoy a post race festival with beer steins custom medals and local snacks.

A point-to-point trail run around Emerald Bay in Lake Tahoe of roughly 7 to 7.5 miles (11 to 12 km). The mostly single-track course has moderate climbs, granite steps, scenic lake views, parking options, and a shuttle back to the start.

A weekend running festival in Mendocino Woodlands Park with trail races including a half marathon, 10K and timed 6 and 12 hour events. The event combines looped single track trails, camping, meals and live music.