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