Trail Running calendar near Brea 2026-2027

We have found 75 Trailruns within 80 miles of Brea. See below where and when you can find the races.

Run the Cahuilla Rez Ultra in Anza California with distances from a tribal 5k to a 100 mile and 6 hour, 12 hour and 24 hour loop events on a runnable two mile dirt course. Camp on site and support the Cahuilla Youth and Family Committee.

Join the Lake Hodges Trail Festival, a two day trail celebration with distances from a kid's mile to a challenging 50K plus a scenic trail duathlon. Enjoy handcrafted medals, lakeside trails and festival vibes, and remember to bring your ow..

Test your limits at SPACEROCK in Vasquez Rocks on October 17, 2026 with looped trail options from 5K to a Half Marathon+ just under 14 miles and 3,200 feet of climbing. Expect rocky single track, a 500 foot Black Hole tunnel and cupless aid..

Experience scenic singletrack and natural terrain at Hahamongna Watershed Park in Pasadena with options for a trail half marathon, 10K, or 5K on Sunday, October 18, 2026. Perfect for trail runners seeking a challenging yet runnable course.

Take on the San Diego 200, a 200 mile endurance run around San Diego County Oct 23 to 26 from Escondido. This rugged, scenic test of self reliance is for experienced ultrarunners. Registration opens Jan 19, 2026.

Tackle scenic singletrack at Caspers Wilderness Park in San Juan Capistrano on October 24, 2026. Choose from 10k, half marathon, 35k, marathon, or 50k for a day of trails, views, and strong community vibes.

Test your endurance on scenic Wildwood Canyon in an 8 hour timed loop run, climb, repeat and see how many loops you can complete. Enjoy aid stations, live bluegrass, local vendors and a postrace gathering at a nearby brewery.

Run scenic singletrack in Cheeseboro within the Santa Monica Mountains near Agoura, with ultramarathon, half marathon and 5k options across runnable climbs and flowing descents. Finish with a medal, hot drinks, tacos and a beer garden.

Machete Muertos 200 at Lake Perris offers multiple ultramarathon and ruck options across scenic lake loops, with camping available and free pro photos. Tackle the epic 200 mile course with about 44,000 feet of gain and a 96 hour cutoff.

November 2026

Experience rugged trails and canyon views at the Saddleback Marathon in Silverado CA on Nov 7. Choose from 10K, half, 25k or marathon routes with big climbs and aid stations. Register by Nov 5.

Run scenic Catalina Island from Avalon, passing the historic Wrigley Mansion and sweeping ocean views in this half marathon, 10K and kids 1K. Tackle challenging hill climbs and the Triple Crown multi race for an extra test of grit.

Join the Third Annual SCTC 5K Turkey Trot on Thanksgiving in Santa Clarita Central Park, a scenic hilly 5K with a 1K kids run. Support Santa Clarita Track Club as runners of all ages race for a great cause.

Run the LA Turkey Trail through the Santa Monica Mountains on Thanksgiving for scenic ocean and mountain views past the Nike Missile Tower. Finishers get medals, shirts, vegan tacos, race photos, a 21 and over beer garden and awards.

January 2027

Tackle the iconic Backbone Trail Ultra in the Santa Monica Mountains: a rugged 68 mile route with about 13,600 feet of climbing and a scenic finish on the Ray Miller Trail. Solo runners with 50 mile experience or teams of 2 to 4 can enter;..