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 2020 race date has been canceled due the coronavirus (COVID-19). The 2021 race date is on August 7, 2021 at 5:00:00 AM/PST.



To the AC100 community,

This is a very difficult time for all of us. 

We have been following the continuing public health threat of the coronavirus (COVID-19) to ensure the health, safety, and well-being of our 2020 entrants, volunteers, and race officials. Many races around the world are canceled due to the virus most notably the Western States 100. We have been considering all the different aspects including recognizing the current travel bans, stay at home rules, the financial impact on individuals, and our social responsibility in this global crisis.

The organizers of the Angeles Crest 100 made the extremely difficult decision to cancel the 2020 Angeles Crest 100 Endurance Run. We are offering an entry spot for the 2021 race to all runners entered in this year’s race and a waitlist spot on the 2021 waitlist to all people on this year’s waitlist.

Just to be clear. If you are in the 2020 AC100 race and paid for it then your entry will be transferred to the 2021 event. You will have to re-register at as per the email you've received. If you have not received that email contact me at If you are in the 2020 AC100 waitlist you will be automatically moved to the 2021 AC100 waitlist.

Thank you for your patience during this difficult period.
          We will see you all in Wrightwood in August 2021.



AC100 Lottery and Sterling Silver Ticket Races 1) All lottery entrants will need to have run an official (i.e. timed race with published results) 50+ mile race in order to register for the lottery. 2) There will be 220 spots for the Lottery. The roughly 30 remaining spots are reserved fo... 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


2020 Angeles Crest 100 & Angeles National Forest Trail Race Trailwork Schedule Gary Hilliard will lead the Trailwork Program > Rocky Castro and Andrew Foote will lead Trailwork Crews The Scheduled Dates posted can change > always check for Sc... 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

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