Trail Running calendar near Big Bear 2026-2027

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.

A Last Person Standing race in Yucaipa, CA where runners must complete a repeated *4.167 mile* loop each hour until one remains. Basecamp offers warmth between laps and limited camping is available at Five Winds Camping.

Trail races at Crystal Cove State Park near Newport Beach include a 15K, 6K and Kids 1k on varied single track and fire roads, with shirts, finisher medals, free photography, breakfast options and a post race beer garden.

A Spartan Race weekend at Lake Perris State Recreation Area on Jan 23 and 24, 2027 features 5K, 10K and 21K obstacle races plus a kids race. The course is described as flat and fast with lakeside views and park facilities.

A 24 hour individual and team trail race at Lake Perris featuring repeated laps of the Molcajete 1.0 loop of about four miles with significant climbing. Teams of four run in a fixed rotation and awards go to top individuals and teams.

Tough Mudder Los Angeles on March 20, 2027 at Lake Elsinore Raceway is a mud obstacle event over scrubland and motor-cross terrain. Race options include 15 plus km, 5 to 8 km, Infinity laps, spectator access, and group packages.

On March 20, 2027 a half marathon and 10K run on a hilly course in the Pioneertown Mountains Preserve near Joshua Tree National Park. The event supports the John Wayne Cancer Foundation and offers chip timing, finisher items, and aid statio..

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.

San Diego Spartan Event Weekend at Pala Fox Raceway offers obstacle course racing with a 5 km Sprint featuring 20 obstacles and a 10 km Super with 25 obstacles, plus kids races and spectator options.

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 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 two-day Spartan weekend at Big Bear Mountain Resort featuring Sprint, Super and Beast obstacle races at high altitude, plus a kids race and spectator options. The layout includes long climbs and descents and a Trifecta opportunity.

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 scenic trail run at Snow Summit in Big Bear Lake, featuring flowy singletrack, technical climbs and descents, Southern Sierra views, wildlife, wildflowers, and a Trail 10K distance on May 16, 2027.

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.