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 trail race held in Altadena, California, beginning and ending at Loma Alta Park and using a revised loop course through the San Gabriel Mountains. The 2027 event returns to the 2026 course and includes steep climbs, rocky trails, remote mountain terrain, and approximately 100 miles of mountain running.
Distances:
- 100 miles - approximately 100.8 miles, loop through the San Gabriel Mountains
- 100K - approximately 62.51 miles, separate race held the same day
The 100-mile course passes Clear Creek, Josephine Peak, Red Box, Newcomb, Shortcut, Chilao, Mt. Hillyer, Chantry Flats, Mt. Wilson, Sam Merrill, and Millard. The 100-mile event lists roughly 20,000 feet of elevation gain and a 33 hour time limit. The 100K lists about 11,879 feet of ascent.
Entry and event requirements include a lottery for most positions, with the lottery opening October 12, 2026 and closing October 26, 2026. About 210 positions are available through the lottery; unselected entrants are placed on a waitlist and a card is charged only if selected. Refunds follow a staged policy: 50% through April 1, 2027; 25% through August 1, 2027; no refunds after August 1, 2027. Trail work is required before September 2, 2027: eight hours for 100-mile entrants and four hours for 100K entrants, with location rules based on residence. Visit the organization's website for the most recent information.
