Brea
Trail Running Calendar near Brea 2026-2027
Explore the top trail runs near Brea for 2026-2027! We've gathered 42 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
May 2027
A 5k through Whittier Narrows Park with tacos, beer for 21+, live mariachi and a post race festival; packet pickup occurs the day before and a 2 hour time limit applies.
Trail runs at Crystal Cove State Park with 50K, 25K and 5K courses on dirt roads and single track, benefiting the John Wayne Cancer Foundation.
Trail races at O'Neill Regional Park in Trabuco Canyon offering multiple distances, staffed aid stations, 50K drop bag service, and a $5 parking fee.
June 2027
A trail event in Griffith Park offering a 26.2 mile team marathon relay and a single-loop 8K. Features chip timing for the relay, aid stations with medical staff, shirts, medals, prizes, food vendors and live DJs.