Angeles Crest 100 Endurance Run


The San Gabriel back country retains much of the natural beauty, if not the primitive wilderness of yesteryear... Thanks largely to the foresight and capable supervision of the U.S. Forest Service and hundreds of volunteers. Picnic areas and campgrounds have been constructed with minimum displacement of the natural setting.

Those desiring to see this primitive wilderness in a single day are invited to participate in the Angeles Crest 100 Mile Endurance Run.

The 2018 race date is on August 4, 2018 at 5:00:00 AM/PST.


2019 AC100 Waiting List Starting with the 2018 lottery, held in December 3rd, we will be now offering a waiting list. You can read all the details in the FAQ within the "Lottery / Waiting List / Refund Policy" section. On-Line Registration 2019 lottery online registration will ... read it all


VOLUNTEERS If you are involved in mountain trail endurance running, you know it takes a small army of volunteers to put on a "point to point" 100 mile endurance run.  We need:   1) help at several late wilderness aid stations:  -Idlehour Checkpo... read it all


2018 AC100 Training Runs -Trail Work Schedule (Check for any changes) RD Gary Hilliard will be in charge of Trailwork > Dominic Grossman will be in charge of Training Runs > March 18, 2018 7:00... read it all

Hal Winton

AC100 co-RD of 29 years, Hal Winton, passed away May 24, 2017 at the Torrance Memorial Medical Center. His family was at his side. He'll be deeply missed.

UltraRunning Magazine
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2011 AC100: Runners on Mt Baden Powell at 9300 ft elevation

Comparing 100 Milers
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1988: The Original First Five 100 Milers Compared in UltraRunning Magazine