Trail Running calendar near San Gabriel Mountains 2026-2027

A trail race at Vasquez Rocks Natural Area Park on October 17, 2026 offering Half Marathon+, 15K, 10K and 5K looped courses over rocky single track, a 500 foot tunnel on the Pacific Crest Trail, multiple aid stations, and finisher swag.

Trail races at Hahamongna Watershed Park on October 18, 2026 offering half marathon, 10K and 5K distances. The half marathon is presented as the organizer's flagship trail event and is reported to sell out quickly.

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.

Trail running at Wildwood Canyon State Park on a 3.7 mile loop with about 600 ft vertical per loop; an eight-hour loop option and a 6K share the same course, with aid stations, vendors, a morning bluegrass band, and an after-party in Yucaip..

A trail running event in Chesebro Canyon near Agoura, California offering 50K, a trail half marathon and a 5k on varied singletrack and fire roads. Aid stations, finisher medals, post-race tacos and a beer garden for ages 21 and up.

A multi-distance ultramarathon at Lake Perris featuring looped courses, significant elevation, on-course aid stations, group camping, pacer rules, and cash prizes for 100- and 200-mile podiums. The 200-mile race is noted as especially deman..

A timed trail event at Crystal Cove State Park in Laguna Beach on October 31, 2026, offering 6 hour and 4 hour options. Parking costs $15 with card payment only; registration closes Oct 28 at 12:00 PM PT and there are no refunds.

Trail races from Black Star Canyon near Silverado, CA, with marathon, new 25k, half and 10k distances; marathon gains 4,244 ft and multiple aid stations are located along the route.

A trail running event in Avalon, Catalina Island with a 13.1 mile half-marathon, a 10K, a 1K kids run, and a Triple Crown challenge offering coastal views and inland climbs.

Fixed-time trail events of three, six and eight hours on an approximately 2.75 mile loop at O'Neill Regional Park in Trabuco Canyon. Wooded trails with about 500 feet of gain per loop and a main aid station with food and hydration.

Trail races of 21 mile, 10 mile, and 4 mile distances run in the Crafton Hills near Yucaipa, California on November 14, 2026. Ten percent of registration fees support the Crafton Hills Open Space Conservancy.

A multi-day trail endurance event on the Backbone Trail in Malibu covering about 70 miles and roughly 13,000 ft of elevation, with a 25 lb dry pack requirement and a 36-hour completion window.

A mud and obstacle focused 5K at Oak Canyon Park in Irvine on November 21, 2026, featuring mud pits, walls, ropes, monkey bars and a festival area with vendors and food.

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.

Trail races in the Santa Monica Mountains on Thanksgiving offering a half marathon, 10k and 5k on fire roads and singletrack, with finisher medals, free photography, breakfast and a 21 plus beer garden.

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.

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 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.

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 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.