Angeles Crest 100K

Experience the inaugural Angeles Crest 100K & Red Box Mountain Marathon on March 20, 2027. Both races will traverse rugged trails of the San Gabriel Mountains, offering runners an intimate look at the challenging terrain that defines the Angeles Crest 100 Mile Endurance Run. The Angeles Crest 100K begins and ends in Altadena, featuring steep climbs, technical singletrack, remote ridgelines, and demanding descents over a distance of 62 miles. This is no ordinary race; it demands preparation, resilience, and respect for the mountains.
The top six male and female finishers will earn Silver Tickets to compete in the full Angeles Crest 100 Mile Endurance Run, solidifying their place among trail running legends. Meanwhile, the Red Box Mountain Marathon follows a point-to-point course covering approximately 26 miles from Altadena through Switzer Campground and Clear Creek to Josephine Peak and beyond.
Both events are steeped in tradition, celebrating the rich history of the Angeles Crest 100 Mile race since its inception in 1986. Runners will encounter a mix of natural beauty and technical challenges as they navigate rocky paths and remote backcountry trails. This is an opportunity to immerse yourself in the unique trail running community that supports these iconic races.
Registration for both events offers early-bird discounts, ensuring you're among the first to tackle this historic course. Detailed information on exact routes, elevation profiles, aid stations, and race-day logistics will be released closer to the event date. Don't miss your chance to make history as part of the inaugural Angeles Crest 100K & Red Box Mountain Marathon.
Be ready for a true mountain challenge like no other.
Join us on March 20, 2027, and become part of an unforgettable trail running experience in the heart of the San Gabriel Mountains.