California · 100 Miler
Angeles Crest 100 Mile Endurance Run
Angeles Crest 100 Mile Endurance Run is a 100 Miler event held in Wrightwood, California. Its next confirmed date is Saturday, October 2, 2027. About 210 runners take part across all distances.
- Race day
- October 2, 2027
- Location
- Wrightwood, CA
- Field size
- ~210 runners
Race details
- Date
- Saturday, October 2, 2027
- Location
- Wrightwood, California
- Distances
- 100 Miler
- Field size
- About 210 runners
- Course
- ~20,000 ft of gain and loss (2026 out-and-back course estimate)
- Registration
- ac100.com
- Official website
- ac100.com
Registration, course & weather
- Start time
- 5:00 AM PDT
- Course profile
- Out-and-back course; Mostly trail, some road; 20000 ft gain, 20000 ft loss (official course data)
About the Angeles Crest 100 Mile Endurance Run
The Angeles Crest 100 Mile Endurance Run is a legendary, long-running Southern California trail 100-miler on remote San Gabriel Mountains singletrack. For 2026 the course is rerouted to a 100.8-mile out-and-back starting and finishing at Loma Alta Park in Altadena, with a turnaround at Mt Hillyer, due to Highway 2 closures and Eaton Fire damage to the historic Wrightwood-to-Altadena route.
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Angeles Crest 100 Mile Endurance Run: common questions
- When is the Angeles Crest 100 Mile Endurance Run?
- The next confirmed date is Saturday, October 2, 2027.
- Where is the Angeles Crest 100 Mile Endurance Run held?
- In Wrightwood, California.
- What distances does the Angeles Crest 100 Mile Endurance Run offer?
- 100 Miler.
- How many people run the Angeles Crest 100 Mile Endurance Run?
- About 210 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Angeles Crest 100 Mile Endurance Run?
- Registration is handled by the organiser at ac100.com. Entry fees, caps and deadlines are set there.
- What time does the Angeles Crest 100 Mile Endurance Run start?
- 5:00 AM PDT.
- What is the course like at the Angeles Crest 100 Mile Endurance Run?
- Out-and-back course; Mostly trail, some road; 20000 ft gain, 20000 ft loss (official course data).
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