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 is on August 1, 2020 at 5:00:00 AM/PST.


Lottery Registration on
The Lottery registration will be on and will begin on December 9th and will remain open for one week.

1) Runners must complete an official 50-mile race prior to entering the lottery within the same calendar year when the lottery is held.
2) The Solo Runner will have priority in the lottery. However, we have to balance the field with both Solo Runner and Runners with a crew.


There will also be a 2020 Sterling Silver Ticket Race Series. 12 spots reserved for the top 2 male and female finishers in the following races:

  • Avalon 50 Miler
  • Leona Divide 100k
  • Angeles National Forest 60k
If a top two Finisher in the races are already entered in AC100 or declines an entry, the spots will roll down no further than 4th place. The Sterling Silver Ticket Winners must sign up and pay the Entry Fee within one week, and will need to submit Trail Work proof prior to race day. 

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

Our Sponsors


Carbo Pro

T8 - Running gear designed by Ultrarunners.
Discount Code: 50-AC1002019

Wrightwood, Ca. Mountain Hardware

VFE - Vision For Enrichment


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WS100 2018 Qualifying Race

SoCal UltraSeries

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Ronald Reagan