Mailbox Peak


Day Hike - Mailbox Peak

Old Trail Up

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  • Very Strenuous
  • Challenging
  • Mileage: 6.0 mi
  • Elevation Gain: 4,100 ft

9:00 at the upper lot (if accessible).  If not, below the gate.

Discover Pass Required

We will go up the old trail and we will decide if we want old or new going down.

Based on anticipated weather and avalanche conditions, this should be a day hike and not require any technical skills.  Should that change, I'll switch this to Old Si. 

I don't plan to go fast but we will go at a steady pace with minimal breaks.  Please don't sign up if you haven't been training and not up to keeping a steady pace.  This isn't an easy hike.  Weather permitting, I plan to stay at the top for a nice break.  

My German Shepherd Tilly, is going.

I'll increase the group size if I get a co-leader to sign up.  Shoot me an email if you are interested.


Mailbox Peak

  • Green Trails Mount Si NRCA No. 206S

    Green Trails Middle Fork Snoqualmie No. 174S

    Green Trails Bandera No. 206
  • See full route/place details.
Required Equipment

Required Equipment

Microspikes or crampons (Yaktrax are not sufficient)

Trekking poles or ice axe

Mountaineering or heavy hiking boots

The Ten Essentials

  1. Navigation
  2. Sun protection
  3. Insulation (extra clothing)
  4. Illumination
  5. First aid supplies
  6. Fire
  7. Repair kit and tools, including knife
  8. Nutrition (extra food)
  9. Hydration (extra water)
  10. Emergency shelter
Trip Reports