Trail Running Calendar California 2026-2027

A 30th annual community 3.14 mile run in Ventura on November 15, 2026, held on a new course with online registration only. The event aims for zero waste and includes a Patagonia store bib discount the week after the race.

Terrain Race Irvine on November 21, 2026 is a mud and obstacle 5K at Oak Canyon Park featuring mud pits, walls, ropes and monkey bars, plus pre-race and finish-line festivals with food, music and finisher medals.

Trail race at Darrington Trail Head by Folsom Lake offering 5K, 10K, 18M and 36M on rocky single-track with rolling hills, aid stations, drop bags, and a 10-hour overall time limit.

A trail race at Finegold Creek Preserve in Friant, California, featuring a 10k and a 7k on conserved foothill land. Net proceeds support Kids Kasa Foster Care and the Sierra Foothill Conservancy.

Trail races in Griffith Park Los Angeles on November 21, 2026 with multiple distances from 10 K to 50 K. Organized by Keira Henninger Events and open for registration from July 1, 2026.

A Thanksgiving Day community run in Santa Clarita offering a 5K cross country course through Central Park and a 1K for children. The event benefits the Santa Clarita Track Club and awards medals to the first 600 competitors.

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.

Trail races in the Santa Monica Mountains near Reseda include a half marathon, 10k and 5k Fun Run and Hike with fire road and singletrack terrain, finisher medals, race shirts and post-race food and beer.

A Thanksgiving morning coastal 1K 5K and 10K walk and run in Huntington Beach that raises funds with World Help to drill clean water wells serving communities worldwide.

A Thanksgiving Day trail event at Beals Point offering 5k and 10k courses plus a free 1k kids run for under-6s. The race supports Folsom's Hope, features one aid station, and requires runners to bring a cup or bottle.

A 28.4 mile trail race in Mill Valley with about 9,000 feet of climbing on the Dipsea Trail. The course is an out and back to Stinson Beach that is then repeated to complete the Quad.

Quarry Turkey in Fremont on November 28, 2026 offers a mostly flat half marathon plus 10K, 5K and a short Little Turkeys run for children. The event includes a food drive for Alameda County Food Bank and a virtual entry option.

A dirt-trail event at Black Mountain Ranch Park on November 28, 2026, offering Half Marathon, 10K and 5K courses with significant climbing. Field limited to 300 runners; terrain includes service roads and single-track.

One mile loop ultra on hardpacked dirt with timed 3, 6, 12 and 24 hour options plus relay teams. Live chip timing, free on course camping, continuous food service, and a 31 hour buckle challenge to reach 100 miles.

A community run hosted by Huckleberry's in Clovis with in-person 5K and 2 Mile courses plus a virtual option, breakfast coupons, youth pricing, and proceeds supporting the Poverello House.

A seasonal cross country event in San Francisco on 12/6/2026 with live and virtual options. Distances include a 5K, 10K, and a nine mile course; all entrants receive race swag and there is a pre race bib and shirt pickup with Brewfest.

A trail marathon and half marathon through Titus Canyon in Death Valley National Park on December 5, 2026. Both courses follow a single dirt road with multiple aid stations and portable toilets, are limited to 200 participants, and have a s..

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.

A 50 mile point to point trail race through Cleveland National Forest and Cuyamaca Rancho State Park, featuring Stonewall Peak and Oriflamme Canyon. Aid stations, drop bag rules, shuttle options, and finish amenities at Stagecoach Trails ar..

A 28k trail run in Fremont Canyon at Irvine Regional Park featuring about 3800 feet of elevation change and four aid stations. The course runs on fire roads, is cupless, and participants are asked to carry personal hydration.