Trail Running calendar near Chino Hills 2026-2027

A community mud run in San Bernardino on October 10, 2026, featuring a 5K with individual and five person team options plus a 1K children's race. The event includes water stations, a rinse area, vendors, and awards.

Trail 5K and 10K at Chino Hills State Park on October 10, 2026. Registration runs April 6 to August 15 and includes race photos, a shirt and a finisher patch.

Ruff Run California on 10/17/2026 in Phelan, CA presents a 20 acre obstacle course for people and their dogs with over 20 obstacles, 4K and 1K options, and an after party with music, games and vendors.

Cahuilla Rez Ultra is a Native organized trail event on the Cahuilla Indian Reservation near Anza, California offering multiple fixed time and distance races on a 2 mile dirt loop. Proceeds support the Cahuilla Band of Indians Youth and Fam..

Experience a diverse weekend of trail running and off road duathlon at San Diego’s Scenic Lake Hodges. Choose from distances ranging from a kid’s mile to a 50K ultra marathon or tackle the mountain bike and run challenge.

Run through the iconic rock formations and canyons of Vasquez Rocks Natural Area Park. This cupless trail event features unique terrain and distances ranging from 5K to an Ultra Half Marathon.

A trail running event in October at Hahamongna Watershed Park offering 5K, 10K and a hilly half marathon across mixed single track and fire roads.

A reborn 200 mile endurance run in Escondido, California held October 23 to 26, 2026. Limited to 24 experienced ultrarunners, it requires crew support and allows 82 hours to complete the full course.

A trail event at Los Coyotes Reservation on October 23-24, 2026 offering a 3.1-mile Yellow Loop and timed 6H and 24H ultra options across desert and alpine trails, with on-site camping, food trucks, and festival amenities.

A team trail relay at Los Coyotes Reservation on October 23-24, 2026 covering 112.8 miles and 23,800 feet elevation gain with camping and village amenities.

An 8-hour loop race and a separate 6K at Wildwood Canyon State Park in Yucaipa, CA, featuring a 3.7 mile loop with ~600 ft gain per loop, aid stations, vendors, and an after party at a local brewery.

Trail races in Agoura, CA organized by SoCalTrail, featuring a 50K ultra, a half-marathon and a short trail distance through Chesebro Canyon with varied singletrack, fire roads, aid stations and finisher medals.

A multi-distance trail festival at Lake Perris featuring 10 to 200 mile races on looped, technical courses, substantial elevation gain, aid stations, group camping, pacer rules, and cash prizes for 100 and 200 mile overall finishers.

Trail races at Caspers Wilderness Park in San Juan Capistrano across multiple distances including 10k, half marathon, 35k, marathon and 50k. The event features marked courses, aid stations and participant merchandise.

Timed trail runs of 6 hour and 4 hour take place at Crystal Cove State Park in Laguna Beach on October 31, 2026. Organizer Sunshine Trail Racing lists entry fees and a registration deadline of October 28.

A trail event in Silverado, CA, with marathon, 25k, half and 10k courses routed from Black Star Canyon; the marathon has 4,244' of elevation gain and aid stations are placed along the route.

Run through the historic streets of Avalon and the rugged interior trails of Catalina Island. Choose between a half marathon, 10K, or kids fun run featuring stunning Pacific Ocean views and island landmarks.

Live Oak Odyssey is a fixed time trail running event at O'Neill Regional Park offering 3, 6 and 8 hour looped runs on a roughly 2.75 mile loop with about 500 feet of elevation gain per loop and a main aid station.

A trail event on November 14, 2026 in Yucaipa, CA offering 21 mile, 10 mile, and 4 mile courses through the Crafton Hills. Ten percent of registration fees support the Crafton Hills Open Space Conservancy.

Trailsgiving at Elysian Park on November 14, 2026 features marked out and back trail routes on hard packed dirt with hills. Distances include 5k, 10k, 15k, and a half marathon with on-course aid and finisher medals.