Mirror Lake & Tinkham Peak

Take "hiker's route" a strenuous, 6 mile round trip hike with 2,100 feet of elevation gain to a summit in the Snoqualmie Pass area. The trail skirts Cottonwood and Mirror Lakes before ascending the rocky ridge to the top of Tinkham Peak. Hiking only to Mirror Lake is 3 miles and 800 feet of elevation gain round trip.

getting there

Take Exit 62 off of I-90, turn right, drive 1.1 miles, and turn right onto Forest Road 5480. Drive 4.1 miles, going straight at the junction with Forest Road 5483 to stay on Forest Road 5480, and reach a three-way junction at Lost Lake. Drive straight,  the middle option, for 2.7 miles to the road's end and trailhead (3,600 ft). 

on the trail

Mirror Lake

3.0 miles round trip with 800 feet of elevation gain, 4,200 ft high point

Hike one mile to Cottonwood Lake  and then 0.6 mile to the Pacific Crest Trail (PCT). Turn left to head south on the PCT to walk along the shores of Mirror Lake (4,200 ft).

mirror lake & tinkham peak

6.0 miles round trip, 2,100 feet of elevation gain, 5,402 ft high point

Hike one mile to Cottonwood Lake  and then 0.6 mile to the Pacific Crest Trail (PCT). Turn right and hike ~0.6 mile north on the PCT and turn left on the boot path that leads ~1.0 mile to the summit of Tinkham Peak (5,402 ft).

information for leaders


If you're planning a scramble or winter scramble of Silver Peak, please use our Silver, Tinkham & Abiel Peaks route/place and choose "Silver Peak" from the alternate titles list.

  • Suitable Activities: Day Hiking
  • Seasons: July, August, September, October
  • Weather: View weather forecast
  • Difficulty: Strenuous
  • Length: 6.0 mi
  • Elevation Gain: 2,100 ft
  • 5,402 ft
  • Green Trails Snoqualmie Pass No. 207
  • Green Trails Snoqualmie Pass Gateway No. 207S

Upcoming Activities

Family Backpack - Mirror Lake

Backpacking & Family Field trip: Backpacking with Kids
Family friendly backpack near Snoqualmie pass. A short trek will take us through forests, across
Difficulty: Casual
Sat, Jun 15, 2024 - Sun, Jun 16, 2024
No Prerequisites
9 participants
Registration opens Mar 28
Foothills Branch
Olga Kuznetsova
Qualified Youth Leader

CHS - Just for Fun - Mirror Lake

Day Hiking Field trip: Conditioning Hiking Series
Just for Fun CHS hike led at a CHS 1 pace (1.5-2.0 mph)
Difficulty: Strenuous
Mon, Aug 26, 2024
No Prerequisites
6 participants 1 instructor
Registration opens Jul 17; Instructor registration open now
Seattle Branch
Trip Reports

This is a list of titles that represent the variations of trips you can take at this route/place. This includes side trips, extensions and peak combinations. Not seeing a title that fits your trip? Log in and send us updates, images, or resources.

  • Mirror Lake
  • Cottonwood Lake
  • Cottonwood & Mirror Lakes

There are no resources for this route/place. Log in and send us updates, images, or resources.