Mailbox Peak

Mailbox Peak is a strenuous, 6 mile in-and-out day hike with 4,100 ft in elevation gain. The heads straight up the ridge through forests, towards the rocky summit.

In response to a continued increase in usage, the Mountains to Sound Greenway and the WA State Department of Natural Resources opened a new, more sustainable trail up Mailbox Peak in the Middle Fork Snoqualmie River Valley in 2014. This new 5-mile trail has offered increased access to this already popular area. Volunteers play a crucial role in keeping this already well-loved trail maintained.

  • Suitable Activities: Day Hiking
  • Seasons: May, June, July, August, September, October, November
  • Weather: View weather forecast.
  • Difficulty: Very Strenuous
  • Length: 6.0 mi
  • Elevation Gain: 4,100 ft
  • 4,926 ft
Map
  • Green Trails Bandera No. 206
  • Green Trails Mount Si NRCA No. 206S
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