Trail Running calendar near Brea 2025-2026

Take on dirt trails at Paramount Ranch in Agoura Hills with distances from 10K to 50K for every trail runner. Enjoy scenic post fire recovery vistas and a supportive trail community on challenging winding terrain.

Celebrate the OC Marathon Run for a Claus on Dec 20, 2025 at The Great Park in Irvine with festive 5K and 1 mile runs plus virtual options in December. Grab a Santa hat, medal and cookies while supporting local charities.

Ring in 2026 with a scenic trail run at West Creek Park in Valencia. Choose from 5k to half marathon on marked out and back loops with aid stations and festive finisher medals.

Tackle the Del Dios Trail Race "The Race of the Gods" at Lake Hodges in Escondido on Jan 4, 2026. Choose from 5K to 50K on scenic dirt roads and single track with up to 1000 feet of climbing in this championship qualifier.

Start 2026 strong with Ring in the New Year at Whittier Narrows Recreation Area. Choose from 5k to half marathon on scenic park trails and earn a custom finisher medal, goodie bag and free event photos.

Run scenic San Pasqual trails on Jan 10, 2026 with distances from a youth 1 mile to a 50 mile ultra. Finishers get a tri blend shirt, handcrafted wooden medal, free race photos and awards for top finishers.

Run or hike to the iconic Hollywood Sign in Griffith Park on Jan 25, 2026. Choose distances from a kid run to an 8 mile course over scenic trails and roads, and enjoy a premium shirt, finisher medal, chip timing, awards and free photos.

Run or hike through iconic Griffith Park with routes for 8 mile, 8K, 5K and a 2.2K kids run, finishing near the Old Zoo. Enjoy skyline views of the Hollywood Sign, a finisher medal and post race snacks.

Run the Sean O'Brien trail race in Calabasas on Jan 31, 2026 for scenic trails and rewarding climbs across multiple distances. Choose from 30K to 100K with the 100K as a Western States 100 qualifier; register by Dec 15.

Run scenic backcountry trails at Boney Mountain Trail Run in Newbury Park on February 7, 2026, with half marathon and 7k options. Expect rugged single track, ocean views, creek crossings and lively post race festival with tacos and awards.

Kick off the Trail Half Series by exploring scenic backcountry trails, creek crossings, and ocean views at Rancho Sierra Vista in Thousand Oaks. Tackle a 13.1 mile half marathon or a 4.4 mile 7k and enjoy post race food, photos, and awards.

Game Day offers 5k, 10k, 15k and half marathon on Feb 8, 2026 at Kenneth Hahn State Recreation Area in Los Angeles, with scenic park trails and a challenging quarter mile hill. Enjoy custom medals, free photos and postrace snacks.

Run The Ranch 50K or Half Marathon at scenic Daley Ranch in Escondido on February 14, 2026. Challenging looped trails with big elevation and stocked aid stations make this a rewarding SoCal Ultra Series qualifier for trail lovers.

Celebrate Valentine's Day with a scenic road and trail run in Griffith Park offering 5k, 10k, 15k and half marathon distances. Enjoy custom finisher medals, free photos, snacks and park views on packed dirt and grass trails.

Explore vineyards, orange groves and single track at the 9th annual San Pasqual Valley Trail Race, with 10K, half marathon and 20 mile options. Enjoy a free wine tasting at the finish and tackle Raptor Ridge in a field capped at 450.

Run the 4 Mile Hill Challenge at Debs Park on scenic trail with rolling climbs, or try the 2K youth hill challenge for adventurous kids. Pet friendly and includes a shirt at packet pickup, but the event is postponed due to severe weather wa..

Run Catalina Island's iconic trail marathon, 10K and 5K through the Conservancy with ocean views and rolling hills. Celebrate the 48th annual event, California's State Off Road Marathon Championship, on March 14, 2026.

Singletrack Stampede in Calabasas features scenic, technical trails on the Millenium Loop with switchbacks and creek crossings. Pick the 22k with a $500 course record bonus or the punchy 10k. Entry includes a local finisher medal, photos an..

Experience scenic single track ridgelines and canyon trails in the Valencia hills north of Los Angeles on March 21, 2026. Choose a 10K, half marathon or challenging 50K ultra with big climbs, aid stations and finishers' swag.

Join the Coast to Crest 10K or 5K in Del Mar on March 28, 2026, a fast, mostly flat dirt trail with wide lagoon views and a downhill finish. A final Sunshine Series Championship qualifier, it is perfect for speed seekers and you might spot..