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
  • Green Trails Bandera No. 206
  • Green Trails Mount Si NRCA No. 206S
  • Red Marker
    47.467425, -121.672590
    47.467424801 -121.672589779
  • Red Marker
    47.462483, -121.639373
    47.4624825988 -121.639373303

Upcoming Activities

Day Hike - Mailbox Peak

Day Hiking Trip
Up the old trail and down the old trail for old times' sake...
Difficulty: Very Strenuous
Sat, Mar 24, 2018
No Prerequisites, Leader's Permission Required
5 participants 0 leaders
Registration closes Mar 22
Tacoma Branch

Day Hike - Mailbox Peak

Day Hiking Trip
If you drop your tax check at the top of Mailbox Peak, do you think
Difficulty: Very Strenuous
Sat, Apr 14, 2018
No Prerequisites, Leader's Permission Required
1 participant on waitlist 0 leaders
Registration closes Apr 12
Olympia Branch

Conditioner Hikes - Mailbox Peak

Day Hiking Field trip: Intense Basic Alpine Climbing Course
Deliver the mail via the Old Trail and get in shape for Intense Basic 2018.
Difficulty: Very Strenuous
Wed, May 23, 2018
No Prerequisites
11 participants
Registration opens Apr 21
Seattle Branch
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