Trail Running calendar near Fullerton 2026-2027

A 200 mile circumnavigation of San Diego County across coastal, urban, mountain and desert terrain with an 82 hour cutoff. Field limited to 24 experienced ultrarunners, crews are required and entry is $750 plus fees.

A trail running event at Caspers Wilderness Park on October 24, 2026, offering 10k, half marathon, 35k, marathon and 50k courses. Courses are described as marked and supported, with an athlete guide and past results available.

An 8-hour timed trail run on a 3.7 mile loop with about 600 feet of climb per loop at Wildwood Canyon State Park in Yucaipa on October 24, 2026. Aid stations and vendors are onsite and an after party is held at Hops and Spokes Brewery.

No Name Trail Races in Cheeseboro Canyon near Agoura, California feature a 50k, a half marathon, and a 5k over varied singletrack and fire road terrain, with stocked aid stations, same day results, finisher medals, and post race amenities.

The Machete Muertos 200 is a multi-day ultramarathon at Lake Perris, featuring distances from 10 to 200 miles. The event offers a free campground and is themed around the Dia de Los Muertos celebration.

A trail event in Silverado, California, offering marathon, 25k, half, and 10K courses routed out of Black Star Canyon with significant elevation gain and multiple aid stations.

Trail races on Catalina Island on November 14, 2026 include a 13.1 mile half marathon, a 10K and a 1 km kids run, with routes starting in Avalon and passing Wrigley landmarks and island interior viewpoints.

Join the Third Annual SCTC 5K Turkey Trot on Thanksgiving in Santa Clarita Central Park, a scenic hilly 5K with a 1K kids run. Support Santa Clarita Track Club as runners of all ages race for a great cause.

Run the LA Turkey Trail through the Santa Monica Mountains on Thanksgiving for scenic ocean and mountain views past the Nike Missile Tower. Finishers get medals, shirts, vegan tacos, race photos, a 21 and over beer garden and awards.

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 races at Crystal Cove State Park with 6k, 15k and a Kids 1k course near the beach. The 15k includes technical features and a $2,000 prize purse, with aid stations stocked by Skratch Labs.

A multi distance trail event in San Pasqual Valley near Escondido, CA offering races from a kids 1 mile to a 50 mile ultra. Finishers receive a shirt, medal and reusable cup and aid stations provide on course nutrition.

The Backbone Trail Ultra is a 68 mile run along the entire Backbone Trail in the Santa Monica Mountains. Solo runners need prior 50 mile experience, while relay teams do not. The event is limited to 200 participants.