Hill Challenge 4 Mile

The Orange Curtain Endurance Run takes place in Cerritos, Lakewood, and Long Beach, California, featuring distances of 100K, 50K, 30K, marathon, 24-hour, 12-hour, 10K, and 6-hour events. The course is a mostly flat, certified USATF asphalt and dirt bike path along the east side of the San Gabriel Ri..

The Into the Wild OC Trail Run takes place at Fremont Canyon via Irvine Regional Park in Orange, California. The event features a challenging 17-mile (27k) single-loop course primarily on fire roads, with an elevation gain and loss of 3,820 feet. Runners have the option to complete a shorter out-and..

The Red Rock Rumble is a challenging 10k trail race held in the stunning Red Rock Canyon of Topanga, California. Featuring steep climbs, rugged terrain, and breathtaking views of the Santa Monica Mountains and Pacific Ocean, the course includes 1,360 feet of vertical gain and loss, with a mix of fir..

The Anytime Runners 12H Training Run is a supported endurance event held at Griffith Park, Los Angeles, specifically at the Crystal Spring Picnic Area. Participants run or walk on a mostly flat 3-mile loop trail for up to 12 hours, from 6 AM to 6 PM, with the flexibility to start anytime between 6 A..

Tough Mugu is a challenging trail running event held at La Jolla Group Campground in Point Mugu State Park, Malibu, California. Featuring 25k and 10k distances, the race showcases Southern California’s stunning coastal mountain trails with scenic views of the Pacific Ocean, Channel Islands, and Bone..

The SoCal Summer 6K/12K, organized by Pasadena Running Company, is a vibrant trail running event set in Lower Arroyo Park, Pasadena. Participants can choose between two distances: a 6K and a 12K trail run, both designed to showcase the area's beautiful interconnected trails. The event features a wav..