October 3, 2026 · Wrightwood to Altadena, California, USA
100 mi (161 km)RunningUltra

Angeles Crest 100 Mile Endurance Run

SoCal Classic.

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Wrightwood to Altadena, California, USASoCal Classic.
Course intelligence

Know the course before you race it.

Terrain

Point-to-point through the San Gabriel Mountains from Wrightwood to Altadena. 22,800 ft of elevation gain through remote wilderness sections.

Conditions

October in the San Gabriels: 55–85°F with warm valley finishes. Can be warm mid-race in exposed sections. October is post-fire season with potential smoke.

Aid Stations

18 aid stations; crew access at 10. Remote mountain sections require self-sufficiency for 10–15 miles between stations.

Key Challenge

Several long sections with no crew access require athletes to carry more than minimal nutrition. A wrong calculation entering a remote section leads to bonking in wilderness with no rescue.

Fueling questions

Nutrition answers for Angeles Crest 100 Mile Endurance Run.

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