Mount San Antonio

California Class 2 San Gabriel Mountains
Mount San Antonio summit landscape
Rank 21

Elevation landscape

10,064 ft

Prominence height

6,224 ft

Difficulty signal_cellular_alt

Class 2

Est. Time schedule

1 day

Distance route

11 miles round-trip

Vert Gain trending_up

3,900 ft

Mount San Antonio (San Gabriel Mountains) is most commonly climbed via the Devil's Backbone. Rated 5/10 difficulty, the standard ascent typically takes 1 day, covering roughly 11 miles with 3,900 feet of vertical gain. The summit stands at 10,064 ft with 6,224 ft of clean prominence — among the most topographically significant peaks in the lower 48.

Recommended Route

Devil's Backbone

Permits & Camping

Climbing Permits

No special climbing permit is required for Mount San Antonio, though wilderness or park entry fees may apply. Peak season runs May-October.

Season & Access

Permit details pending editorial review

Safety Information

Technical Requirements

  • Alpine Start
  • Exposed Scrambling
  • Off-Trail Navigation

Known Hazards

  • Dehydration
  • Heat Exhaustion
  • Lightning Exposure
  • Loose Rock & Scree
  • Exposed Scrambling

Data source: PeakList.org (elevation, prominence); PeakBagger/SummitPost (route, class, hazards, permits)

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