Angeles Crest 100 Mile Endurance Run
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Angeles Crest 100 Mile Endurance Run
The Angeles Crest 100 Mile Endurance Run is a long-distance race through the San Gabriel backcountry and Angeles National Forest. The event has been held since 1986 and the 36th running is scheduled for October 3, 2026. For 2026 the course is an updated out-and-back route that starts and finishes at Loma Alta Park and includes a segment to Mt Hillyer and back, revised because of Highway 2 closures and the effects of the Eaton Fire.
Race weekend includes pre-race registration, drop-bag collection, and a trail briefing at Loma Alta Park, plus official runner check-in and a post-race award ceremony. The organizer maintains a checkpoint cutoff chart that lists aid-station mileage, official cutoffs, and access for crew and pacers. A course map and elevation profile are published for the 2026 route.
The event offers organized training opportunities, including a multi-day training camp and a final training run that covers the last portion of the course from Chantry Flats to Loma Alta Park. Trail work days are scheduled in the months before the race to prepare and mark the route. The AC100 participates in qualifying and entry programs: it is a Western States qualifier for 2027, appears on the UTMB index, and names certain 50 mile and 50 kilometer races that grant automatic entry for top finishers. Visit the organization's website for the most recent information.
