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MULTIDAYRUNNING
Fixed-Distance

Angeles Crest 100

The 36th Angeles Crest 100 uses a new out-and-back course from Loma Alta Park for 2026 because of Highway 2 closures and Eaton Fire impacts.

Official WebsiteBack to Events

Event dates, entry rules, qualification standards, and course details can change. Always verify current information on the official event website before registering or booking travel.

Event Overview

Listed edition overview
DateOct 3-4, 2026
LocationAltadena, California, USA
FormatFixed-Distance
TerrainMountain
RegionNorth America
Distance100 mi
State / areaCalifornia (CA)
Course modelOut-and-back
Edition noteThe 2026 edition uses a new Altadena out-and-back instead of the traditional point-to-point course.
Cutoff33 hours
Start5:00 AM Saturday
HighlightsSan Gabriel Mountains, 36th Edition

Course & Terrain

A 2026-specific mountain out-and-back starting and finishing at Loma Alta Park in Altadena.

Entry & Logistics

Listed qualification and support details
Registration and feesCheck the official event website for current availability, deadlines, prices, taxes, and refund terms.

Why This Race Matters

Angeles Crest 100 is a useful reference point for runners comparing long fixed-distance ultras that still unfold over multiple days. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.

Planning Notes

  • Prepare for sleep decisions, weather swings, and aid-station discipline. The distance is only one part of a multi-day fixed-distance race.
  • Treat intermediate cutoff gates as part of the course. Build enough margin for aid stops and late-race slowdown, and verify every current gate in the official rules.
  • Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
  • The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
  • New course for 2026
  • Do not rely on older point-to-point route information

Verification & Sources

Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated August 18, 2026. Organizers can revise details after review.

  1. Official Angeles Crest 100 site — https://ac100.com/
  2. Official 2026 registration information — https://ac100.com/reg/
  3. Multiday Running event directory review scope: August 18, 2026.