Trail Running calendar near Mount Wilson 2026-2027

Trail running event in Valencia California on 03/20/2027 offering 10K, Half Marathon, and 50K Ultra across hills, ridgelines, and canyon terrain with views of the Santa Clarita Valley.

An outdoor obstacle event at Lake Elsinore Raceway on March 20, 2027, offering multiple distances including 5 to 8 km and 15 plus km, Infinity laps, named obstacles, finisher medal, shirt, headband, and a finisher drink.

Multi distance trail running and gravel bike events at Diamond Valley Lake in Hemet, California. Routes include lakeside loops, out and back courses, a stroller 5K and a kids fun run.

Trail races at Noli Indian School on the Soboba Reservation offer marathon, half marathon, 5k and kids 3k options with Native and Open divisions. The event is limited to 100 entrants and includes finisher awards and early T shirts.

A long-running multi-distance event in Agoura Hills with half marathon, 10K, 5K, mile and multi-race challenges, scenic courses through the Santa Monica Mountains, and a post race party.

Leona Divide is a trail running event near Lake Hughes, California, offering distances from 30K to 100 miles. The 100 mile and 100K are Western States qualifiers and the 50 Mile awards AC100 Sterling Silver Tickets.

A multi-distance trail event near Ojai, California from April 30 to May 2, 2027, featuring races from 10K to 100 miles, large elevation gains, and a cap of 150 total entries.

A multi-format trail event in Placerita Canyon offering looped courses, multiple distances and time categories, team relays, camping, cupless aid stations, chip timing, and finisher swag on May 1, 2027 in East Walker Ranch Open Space.

A scenic 5k at Whittier Narrows Park with live mariachi and banda music, water stations, chip timing, and a post-race festival featuring tacos, a beer for 21+, a medal, and a t-shirt.

Trail event at Crystal Cove State Park on May 8, 2027 with 50K, 25K and 5K routes on dirt roads and single track, ocean views, participant shirt and finisher mug, supporting the John Wayne Cancer Foundation.

A high altitude Spartan weekend at Big Bear Mountain Resort featuring Sprint, Super, Beast and Kids races, plus a Trifecta option to complete all three main distances in one weekend.

Trail event in O'Neill Park, Trabuco Canyon offering multiple distances from 10k to 50k on May 15, 2027. Registration opens Dec 1, 2026 and entries are nonrefundable with rollovers allowed for cancellations due to weather or fire.

A trail 10K at Big Bear Mountain Resort on singletrack through high altitude pine forest, with technical climbs, descents and views of the Southern Sierra. The weekend also includes Spartan obstacle races and spectator options.

A fully supported trail event in the Angeles National Forest featuring a 50k and a half marathon on technical singletrack, high elevation terrain, aid stations, free race photos and a finish festival with food and massage.

A trail-based marathon relay and an 8K in Griffith Park on June 6, 2027, featuring a true loop course with a long climb, chip timing, aid stations, race photos and a festival area with DJs and food trucks.