Trail Running calendar near Yorba Linda 2026-2027

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 in Yucaipa with an 8 hour loop race on a 3.7 mile loop and a separate 6K that follows the same scenic circuit.

Trail running in Chesebro Canyon near Agoura with a 50K, a half marathon and a short trail race; courses feature singletrack, fire road climbs, stocked aid stations and post race food with a beer garden for 21 plus.

A multi-distance trail event at Lake Perris featuring a 200-mile ultramarathon with 44,000+ feet of climb, technical terrain, looped courses, camping, aid stations, pacer rules, and cash prizes for 100 and 200 mile podiums.

A timed trail event at Crystal Cove State Park in Laguna Beach on October 31, 2026, offering 6 hour and 4 hour options, with a parking fee that is card only and a no refunds or transfers policy.

A trail running event in Silverado, CA rerouted to Black Star Canyon with four distances including a new 25k. The marathon features significant climbing and multiple aid stations along creekside trails, switchbacks and ridge sections.

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.

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 running and hiking event in the Crafton Hills near Yucaipa offering 21 mile, 10 mile, and 4 mile courses with notable elevation gain. Ten percent of registration fees support the Crafton Hills Open Space Conservancy.

A long distance trail event in Malibu covering about 70 miles with roughly 13,000 feet of elevation gain and a 36 hour time window, with a required dry pack weight of 25 pounds and both paid and volunteer ticket options.

An obstacle and mud focused 5K at Oak Canyon Park on November 21, 2026 featuring mud pits, walls, ropes and monkey bars, plus a finish line festival. Registration includes value and VIP package options.

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.

A Thanksgiving morning trail race in the Santa Monica Mountains with half marathon, 10k and 5k options, ocean and valley views, finisher medals, free course photos, a beer garden and taco breakfast, and a canned food drive for the West Vall..

A Thanksgiving morning 1K/5K/10K on the Huntington Beach coastline that raises funds with World Help to drill clean water wells; routes run along the pier and Main Street with on-site check-in and nearby parking.

One mile loop ultra on hardpacked dirt with timed 3, 6, 12 and 24 hour options plus relay teams. Live chip timing, free on course camping, continuous food service, and a 31 hour buckle challenge to reach 100 miles.

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 Malibu on December 5, 2026 offers three trail distances: 50 Miler, 50K and 30K. Registration opens April 1 and closes June 1.

A night trail race in Tarzana on December 5, 2026, with lighted routes through the Santa Monica Mountains. Offered as 5K and 10K, the event has notable elevation, aid stations, required headlamps, and post race medals and shirts.

A nighttime Last Person Standing race in Yucaipa, CA on Dec 11, 2026 where runners repeat a 4.167 mile loop each hour and must finish each lap before the bell. Headlamps and a firelit basecamp frame the event as it runs through the night.

Trail races at Crystal Cove State Park near the beach featuring a 15k with a $2,000 prize purse, a 6k and a Kids 1k; courses include aid stations, marked single track and post-race amenities like breakfast and free photography.