Mount Si

Mount Si is a 4,167 ft / 1,270 m mountain peak in the Cascades in Washington, United States. Based on peakery data, it ranks as the 1677th highest mountain in Washington and the 29408th highest mountain in the United States. The nearest peaks are Blowdown Mountain, Crater Lake Mountain, Little Si, Dixie Peak, Mount Teneriffe, and Green Mountain. See the Mount Si map, 3D fly around, and the Mt. Si photos to get a better sense of the mountain.

Mount Si SUMMIT LOG peakery first ascent by GeoBrown

99 people report climbing or hiking to the summit, most recently on Apr 9, 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 Mount Si Trail (new trail), Mount Si Trail and Old Si Trail.

Others who’ve claimed Mount Si

  • chris
  • jonatron
  • OspreyGuy
  • somaalathia27
  • lilnova
  • jeggert
  • travelhiker
  • joelhowitt
  • webbetron
  • dsbmtn
  • MangyMarmot
  • NspctrGdgt
  • jlsmithlv
  • twoamuse
  • MartinAyling
  • CHillNews
  • KristaC
  • rebecca1
  • RichHamilton
  • brian
  • sven
  • rbaumchen
  • Sarah-Heller
  • mtngoat
  • JF
  • Baldo100

Routes Used trails & approaches

38% Mount Si Trail (new trail)

33% Mount Si Trail

24% Old Si Trail

3% connector trail to Mount Teneriffe Road-Trail


3d Fly AroundShow Bigger »

SNAPSHOTedit info


4,167 ft / 1,270 m


247 ft / 75 m

Height Rank

#1677 in Washington

#29410 in United States




Washington, United States

Claimed by

see all
  • scott
  • chris
  • GeoBrown
  • jonatron
  • OspreyGuy
  • somaalathia27
  • lilnova
  • jeggert
  • travelhiker
  • platypii
  • Free2B
  • joelhowitt

Nearest peaks see on map »