Trail Running calendar near Brea 2026-2027

A half-marathon and 7k through Rancho Sierra Vista and Point Mugu State Park with creek crossings, single-track climbs, ocean views, finisher medal and tee, free race photos, post-race food and sports massage.

A free, social trail run on Saturday, February 7, 2026 in Newport Coast and Laguna Coast Wilderness Park. The route is about 7.5 miles with roughly 1,290 ft of elevation gain and finishes with snacks and a raffle.

The Ranch 50K is a trail race in Escondido's Daley Ranch area on February 14, 2026, featuring a 50K and a Half Marathon. Both courses start and finish at Dixon Lake and include multiple aid stations. Participants receive race swag, and fini..

Celebrate Valentine’s Day with a scenic trail run in Griffith Park Los Angeles. Choose from 5k, 10k, 15k or half marathon loops and enjoy aid stations, a finisher medal, free photos and post race snacks.

Trail race in San Pasqual Valley with 20 mile, half marathon and 10K options; the longer courses summit Raptor Ridge twice and most of the terrain is single track. Finish line features a free wine tasting with local vineyards.

A trail event at Audubon Center at Debs Park on February 21, 2026 offering a 4 mile run and a 2K youth hill challenge. The route runs on rolling hills with narrow trails, is pet friendly, and includes hydration stations.

Run through an active limestone quarry at the Cemex Quarry Quest 5K in Rialto, where rugged terrain and towering industrial equipment create a thrilling backdrop. Enjoy a memorable race while supporting cancer awareness and fundraising.

A trail marathon and shorter races held March 14, 2026 in Avalon on Catalina Island. The event includes the state Off Road Marathon Championship plus 10K, 5K and a Kids Run.

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, California on March 21, 2026. This trail running event offers 10K, half marathon, and 50K ultra distances featuring single track trails and panoramic views. The cupless race includes a finisher medal, shirt, a..

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..

Join the inaugural Hill Canyon Trail Trot 5K in Camarillo, a creekside run through canyon trails and oak lined paths with a free Kiddie K. Proceeds support the Stepping Stones Riding Program and low cost horse experiences.

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.

A coastal trail race in Del Mar on March 28, 2026, featuring 10K and 5K out-and-back courses on hard-packed dirt with flat terrain, lagoon views, a downhill finish, and status as the Sunshine Series final qualifier.

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

The Billy Goat Mountain Climb on April 4, 2026 offers three trail distances: a 17 miler, a half marathon, and a 10K. It is a USATF sanctioned event featuring a mountain climb course. Registration is open through UltraSignup.

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.

Hoppy Easter invites runners to tackle 5k, 10k, 15k and half marathon routes through Griffith Park, Los Angeles on April 4, 2026. Enjoy scenic trails, a custom finisher medal, free photos and snacks for a festive spring run.

A multi-distance running event at Chumash Park featuring a mostly trail half marathon, 5K and 10K road races, stack challenges that combine multiple races, on-course support, timed results and an awards and expo area.

Two days of trail runs and gravel bike rides at Diamond Valley Lake Marina featuring marathon, shorter trail distances, youth and stroller events, plus gravel rides around the lake and finisher shirts and medals for multiple races.