Trail Running calendar near Brea 2026-2027

Run a 5K through the unique setting of an active rock quarry in Rialto. The course offers views of massive machinery and limestone terrain. All proceeds benefit local school STEM programs.

Event Overview The Catalina Island Marathon is a multi-distance running event taking place on Catalina Island, off the coast of Los Angeles. The 2026 edition marks its 48th annual occurrence. It is designated as California's State Off-Road..

Singletrack Stampede in Calabasas, CA offers trail races including 10k and 22k plus half marathon league entries on singletrack with switchbacks, creek crossings and viewpoints; entries include a finisher medal and free race photography.

Explore the hills of Valencia on March 21, 2026, with a choice of 10K, half marathon, or 50K ultra trail distances. The course features single-track trails, challenging climbs, and panoramic ridge views. This cupless event provides a shirt,..

Trail races at Whiting Ranch Wilderness Park on March 21, 2026 feature 6k, 10k, half marathon and 30k courses through oak-filled foothills with marked support and event swag. Finishers are offered a complimentary beer with a meal at a local..

The inaugural Hill Canyon Trail Trot 5K is a scenic trail run along creek paths in Camarillo. The event features a 5K race and a Kiddie K for children, with all proceeds supporting the Stepping Stones Riding Program.

A loop-based trail endurance event in Fallbrook, CA on March 21, 2026 offering 12 hour solo, 12 hour team, and 6 hour solo formats. Each 4 mile loop gains about 1,300 feet and a stocked aid station supports every lap.

The Coast to Crest offers a flat and fast 10K and 5K on hard-packed trails in Del Mar. Runners enjoy spectacular lagoon views and a downhill finish. It's the final championship qualifier for the series.

The Griffith Park Trail Marathon will take place in Los Angeles on Saturday 28 March 2026. You can run between 10 and 50 miles.

This trail race climbs into the Cleveland National Forest near Silverado, California. Runners can choose from a 10K, half marathon, or a challenging 17-mile local loop. All courses feature significant elevation gain and well-placed aid stat..

Trail run and hike options of 6K and 10 mile take place in El Moro Canyon at Crystal Cove State Park on April 4, 2026. Registration includes race photos, a shirt, and a finisher medal; park parking is $15 per vehicle.

Hop into spring with the Hoppy Easter runs at Griffith Park. Choose from four distances on a scenic dirt trail course, from a 5k to a half marathon. Every finisher gets a custom medal, and the event includes free photos and a friendly atmos..

The Nature Made Great Race returns for its 41st year in Agoura Hills with multiple distances, including a scenic trail half marathon. Runners receive a technical shirt, finisher medal, and enjoy a post-race party. The event features USATF-c..

Explore the trails and gravel paths around Diamond Valley Lake. This two-day festival in Hemet offers running distances from a 1-mile youth run to a full trail marathon, plus gravel bike rides. It's a cup-less event with finisher medals, sh..

Retro themed runs at Bolsa Chica State Beach on April 12, 2026 featuring 5K, 10K, a half marathon and a kids dash, plus a costume contest, live DJ, vendors, chip timing and oceanfront course views.

Trail races at The Lakes Community Center in Lake Hughes on April 18, 2026, offering distances from 30K to 100 miles; the 100K and 100M are Western States qualifiers and the 50M awards AC100 Sterling Silver tickets to top finishers.

This trail running event on the Soboba Indian Reservation features a Marathon, Half Marathon, 5k, and Kids 3k. Courses include varied terrain with significant elevation gain. Proceeds support Noli Indian School scholarships.

Point Mugu Trail Run in Malibu features a 13.3 mile half and a 6.9 mile 10k with ocean view switchbacks and a steep Fireline climb. The event includes a finisher medal, free course photos and post race food and a beer garden.

A looped trail event at Lake Perris offering 10k, 50k and 100k with significant elevation gain, aid stations, group camping, and double-challenge buckles.

Trail races at Victory Trailhead offer distances from 6K to a new 100K on rugged trails with full aid, a cupless policy, course markings, drop bag service for longer races, and post race food and medals.