Brea
Trail Running Calendar near Brea 2026-2027
Explore the top trail runs near Brea for 2026-2027! We've gathered 49 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
April 2027
A multi-distance weekend running event in Corona, CA featuring timed ultras, a relay option, and required fundraising for youth programs.
Timed 3, 6, and 12 hour running and walking events through Southern California's only coastal redwood grove at Carbon Canyon Regional Park.
May 2027
A 5k at Whittier Narrows Park with a post-run festival that includes tacos, beer for 21 plus, a medal, t shirt, chip timing options, and awards.
Trail races at Crystal Cove State Park on May 8, 2027 offering 50K, 25K and 5K courses with ocean views; proceeds support John Wayne Cancer Foundation.
Trail races at O'Neill Regional Park in Trabuco Canyon on May 15, 2027 offering distances from 10K to 50K over shaded singletrack and fire roads.
June 2027
Trail marathon relay and 8K in Griffith Park on June 6, 2027, featuring a true loop course, aid stations, festival atmosphere, chip timing and awards.
July 2027
Experience a 2-mile coastal run at Hermosa Beach featuring a challenging mix of soft and hard-packed sand as part of the International Surf Festival.
September 2027
A 7+ mile trail race up Mt Baldy in the Angeles National Forest, rising from about 6,000 to 10,064 feet and organized by San Antonio Canyon Town Hall to support the local community.