Trail Running Calendar California 2026-2027

Celebrate Thanksgiving morning with a scenic 5K or 10K run along Huntington Beach to fund clean water projects for communities in need around the world.

A 28.4 mile out and back trail event from Old Mill Park to Stinson Beach with about 9,000 feet of vertical gain. The route follows the Dipsea Trail, includes multiple named trail sections and aid stations, and is repeated for the Quad.

A family friendly Thanksgiving weekend run at Quarry Lakes Regional Park with a half marathon, 10K, 5K and a free short kids race. Costumes and food donations for the Alameda County Community Food Bank are encouraged.

Trail races of Half Marathon, 10K and 5K take place at Black Mountain in San Diego on November 28, 2026. Courses run on dirt with hill climbs and technical sections and the field is limited to 300 runners.

Endurance event at Washburn Ranch, Hemet CA, on a one mile hardpacked dirt loop offering 100 miles, relay teams, and 24 hour, 12 hour, 6 hour and 3 hour formats with chip timing, live tracking, camping and onsite food.

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.

Death Valley Trail is a trail running event in Death Valley offering a marathon and a half marathon on Saturday, December 5, 2026, organized by Enviro Sports as part of its trail run series.

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 point-to-point 50-mile trail race from Sunrise Trailhead to Stagecoach Trails RV Resort, crossing Cuyamaca Rancho State Park and Stonewall Peak before descending Oriflamme Canyon. A 14.5 hour cutoff and an optional $15 pre-race shuttle 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.

Trail running at Calero County Park offers single track, dirt paths and varied climbs across distances from a kids run to a 50K. Courses are marked with colored ribbons and include aid stations, mapped routes and free parking.

Ray Miller 50/50 in Point Mugu State Park, Malibu, California on December 5, 2026 features 50 mile, 50K and 30K distances. Registration opens April 1 and closes June 1.

A community-focused running event in Ridgecrest, CA offering 50K, 30K and 10K loops on rolling desert dirt roads with multiple aid stations and handmade finisher medals.

Peacock Gap Trail Run on December 5, 2026 at China Camp State Park features 10K, half marathon and 30K trail races with coastal views and varied single track terrain. The event is cupless so runners must carry their own bottle or reusable c..

The Hunter S. Thompson Fear & Loathing will take place in San Francisco on Sunday 6 December 2026. You can run between 50 and 50 miles.

A Last Person Standing loop race at El Dorado Ranch in Yucaipa on Dec 11, 2026. Runners repeat a measured 4.16 mile loop at night until one person remains; permits are pending and registration closes Dec 8.

Crystal Cove Trail Run in Laguna Beach offers marked trail races of 15K, 6K and a Kids 1k with aid stations, course photography and on site amenities. The 15K includes a $2,000 prize purse and age group awards.

Trail races in the redwoods at Sanborn Regional Park offering half marathon, 10K and 5K courses on single-track trails with chip timing and finisher medals. Walkers and hikers are welcome.

Trail races at Daley Ranch in Escondido offer 5K, 10K and a 10 mile course that climbs Standley Peak for a 360 degree view. The event limits fields to 300 runners and lists varied elevation gain by course.