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Back to list of TNAB hikes

Tinkham Peak
(from south of Mirror Lk)

GPS Data: Map, Track, Waypoints

Click here for GPS eXchange format file.


  • Trailhead
  • Parking
  • Trail forks
  • Summits


  • Includes roads to trailhead.

GPS Stats:

  • mileage: 2.5 miles
  • total elevation gain: 1700
  • time to west summit: approx
    1 hr 10 min
  • round trip approx: 2 hours

Click here for larger map
Map of the 40 most prominent peaks visible from Tinkham

Driving directions:

  • Click here for road map (380K)
  • drive I-90 past Snoqualmie pass
  • Take stampede pass exit (next exit past the pass).
  • Drive south-ish following signs for lost lake and forest service road 5480.
  • At a big 4/5 way intersection (approx 5.4 miles in) follow the signs to lost lake.
  • Stay on the main drag driving up above lost lake.
  • At about 7.0 miles in the road will fork. Go left. (The right fork goes up toward
    Cottonwood lake and to a trailhead described in the "usual" hiking books.
  • Continue to stay on the main drag, ignoring any forks to lesser roads.
  • The going gets rougher off and on (A 4WD high clearance vehicle is recommended.
  • At about 8.3 miles (about elev 4000) is a little waterfall on the right. Park here.

Hiking directions:

  • We walked the road a little farther (west) to find a weakness in the woods which
    we followed up.
  • The Cedar River watershed boundary is near here and you may see no trespassing
    signs posted in the trees.
  • Angle up and right following any line of least resistance to find a narrow talus field.
  • Follow the talus field up till you reach a trail that crosses it.
  • Go right to mirror lake and left to the east summit.
  • The summit route follows the ridge and the edge of the cedar river watershed.
  • The west summit is an easy 10 minute walk along the top.

TNAB Hikes are not for the faint of heart. During the season we meet every Thursday in the Eastgate parking lot at 5pm. We hike fast. We hike in the rain. We hike in the snow. We hike in the dark. We don't always follow the beaten path. If you want to join us, click TNAB.

Drop me a line at with questions or comments about this web site.
Last modified: 01/17/11