Ontario Peak

Ontario Peak is a 8,693 ft / 2,650 m mountain peak in the San Gabriel Mountains in California, United States. Based on peakery data, it ranks as the 828th highest mountain in California and the 7268th highest mountain in the United States. The nearest peaks are Sugarloaf Peak, Bighorn Peak, Timber Mountain, Cucamonga Peak, Telegraph Peak, and Thunder Mountain. Ontario Peak belongs to the Sierra Club Hundred Peaks Section, and the LA Home Court 1000 peak lists. See the Ontario Peak map, 3D fly around, and the Ontario Peak photos to get a better sense of the mountain.

Ontario Peak SUMMIT LOG peakery first ascent by shanaynay11

40 people report climbing or hiking to the summit, most recently on Mar 22, 2014. Below are trip reports and shared pictures from their climbs. Based on the summit log, the most popular climbing routes and hiking trails to the summit are Icehouse Canyon, Bighorn Peak Ridge and Falling Rock Canyon.

Others who’ve claimed Ontario Peak

  • justinjohnsen
  • alyssaamaee
  • AS73
  • earthculturemusic

Routes Used trails & approaches

76% Icehouse Canyon

12% Bighorn Peak Ridge

6% Falling Rock Canyon

3% Lytle Creek Middle Fork

1% South slope of Sugarloaf Peak.


3d Fly AroundShow Bigger »

SNAPSHOTedit info


8,693 ft / 2,650 m


1,039 ft / 317 m

Height Rank Range

San Gabriel Mountains


California, United States

Claimed by

see all
  • Sunday
  • justinjohnsen
  • shanaynay11
  • JuanAlvarenga
  • rdm24
  • mcphersonm80
  • dgrutherford
  • BeerGut
  • JohnnyMar
  • SDHiker
  • Christopher
  • Nei

Nearest peaks see on map »