Trail Running calendar near Glendora 2026-2027

Haunted Heroes in Valencia on October 4, 2026 offers 5k, 10k, 15k and a half marathon on looped trails with aid stations each loop; registration includes a finisher medal and free photos.

A two-day mountain trail festival in Big Bear Lake with five race distances, varied alpine and desert terrain, UTMB World Series Major status, and opportunities for qualification to major trail events.

On October 10, 2026 That's No Moon offers 50 Mile, 50K and 30K races in the remote Santa Ana Mountains near Silverado. Courses run on forest roads with significant elevation gain, staffed aid stations, and mandatory self-sufficiency require..

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.

A multi-distance running event on the Cahuilla Indian Reservation near Anza, CA, featuring a runnable 2 mile loop, fixed-time races and a 100 mile option with a buckle; proceeds support the tribe's Youth and Family programs.

A trail race at Vasquez Rocks in Agua Dulce on October 17, 2026 offering Half Marathon+, 15K, 10K and 5K loops through rock formations, canyons and a 500 foot tunnel on the Pacific Crest Trail with multiple aid stations.

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 trail event at Wildwood Canyon State Park featuring a timed 8 hour loop format and a single-loop 6K, with aid stations, vendors, morning live music, and an afterparty at a local brewery.

No Name Trail Races in Agoura, CA on October 24, 2026 feature trail courses through Chesebro Canyon, including a 50K, a 14.1-mile half-marathon, and a 3.6-mile 5k, with aid stations, finisher medals and post-race refreshments.

A multi-distance trail event at Lake Perris featuring a 200 mile race with over 44,000 feet of elevation gain, looped courses, on-course aid stations, group camping, and cash prizes for top 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.

A Halloween trail event at Crystal Cove State Park offering 6 hour and 4 hour timed options, organized by Sunshine Trail Racing. Registration is on UltraSignup and closes October 28.

Trail marathon and shorter distances on November 7, 2026 in Silverado, CA, routed out of Black Star Canyon after campground closures. Courses follow Black Star Canyon into Mariposa Reserve with substantial elevation gain.

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 in Yucaipa, California on November 14, 2026 offering 21, 10 and 4 mile routes through the Crafton Hills, with notable elevation gain and 10 percent of fees donated to local conservation.

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.

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 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.