Angeles Crest 100 mile endurance run

Angeles Crest 100 mile endurance run starts in Wrightwood, California, on October 3, 2026. The single event is a 100-mile trail race that begins at 5:00 AM, and as the name suggests it is a mountain course along the Angeles Crest, so you should expect serious climbing and descending along with the distance.

A mountain 100-miler is the deep end of trail running, and this one is best approached with at least one 50-mile or 100K finish already in your legs. Beyond the mileage, the key training pieces are vertical gain and long descents, because a 100-mile mountain course punishes quads that are not ready for hours of downhill. Plan a build of 20 to 24 weeks with weekly climbing sessions, back-to-back long runs on mountain trails and a couple of overnight or pre-dawn runs to test your headlamp and night routine. Heat can be a factor in Southern California in early October, so practice drinking and taking in calories on warm training days. Crew and pacer logistics take time to sort out, so plan them early rather than in the last week.