Southeast Ridge

Page Type Page Type: Route
Location Lat/Lon: 47.34920°N / 121.4549°W
Additional Information Route Type: Scramble
Additional Information Time Required: Less than two hours
Additional Information Difficulty: Walk-up (Class 2)
Sign the Climber's Log


This may be the quickest way up the mountain. Certainly this way is not as steep as the Northwest Route.

The shortest approach for this climb is from the Mirror Lake Trail, which starts from a few miles up FR-5480 (which junctions off of FR-54, the Stampede Pass Highway). The trail starts at approximately 3,750 ft. It is well-used. In about 1/3rd of a mile diminutive Cottonwood Lake is reached, and in one mile the northeast shores of Mirror Lake are reached. The junction with the Pacific Crest Trail is here. The east side of Tinkham Peak can be seen rising above the lake. Follow the PCT south along the lake to its outlet. Cross the outlet and locate the flagged route by gaining the toe of the Southeast Ridge south of the lake.

Route Description

I did not pick up the trail at the outlet but found it shortly thereafter. Pass a camp and look for flagging. The route is over-flagged (every 30 feet!), in my opinion, making it very easy to see where you need to be going. If you lose the trail, simply keep to the ridge crest or slightly south of it and you'll soon relocate the trail. The flagging eases off higher up but by this time the route (and trail) are obvious. The trail stays to the north side of the constant signage saying "Cedar River Watershed--Source of Seattle's water supply. Trespassers will be prosecuted."

Eventually, the trail will break out in the final alpine summit slope whereupon it more or less becomes indistinct. Simply ascend the slope about 50 feet left of the east-facing cliff to the East Summit. This is the summit that has been triangulated at 5,395 ft. From the East Summit it may appear that the West Summit is higher. The exposure on the north side of the mountain is quite intense, so be careful.

There is a good boot path between the East and West summits. It will take about 10 minutes to make the transit. Two hours from car to summit, approximately. There is a register at the West Summit.

One can descend the Northwest Route back to the PCT to make this a loop trip (recommended) or go back the way you came. The extra time needed to make it a loop trip is inconsequential (maybe 20 minutes).

Essential Gear

The gear you need is dependent on the season and conditions. The route is non-technical, though an ice-axe might be handy in winter.

Additions and CorrectionsPost an Addition or Correction

Viewing: 1-1 of 1

Redwic - Sep 25, 2012 1:54 pm - Hasn't voted


The SE ridge route has gotten a lot more popular than when this route page was created nine years ago. The path is well-trodden and easy to follow in most places. I only saw a couple of flags. There is a "Mountaineers" summit register container at the west summit. As for the driving directions, the main place somebody might make a mistake is near Lost Lake. A short distance prior to Lost Lake, FR-5480 reaches a five-way intersection. DO NOT CONTINUE STRAIGHT. Instead, veer right to remain on FR-5480 and go around the East & North sides of the lake until reaching the desired Mirror Lake parking area(s). There is a "Trail 1302" sign (for Mirror Lake Trail) at the last left-bending road-turn just prior to its final uphill ascent to the trailhead. The trailhead, itself, is unmarked but obvious. Cars will need to park along the side of the road at the bottom of the hill, while high-clearance vehicles can find parking just beyond the trailhead.

Viewing: 1-1 of 1



Parents refers to a larger category under which an object falls. For example, theAconcagua mountain page has the 'Aconcagua Group' and the 'Seven Summits' asparents and is a parent itself to many routes, photos, and Trip Reports.