Mount Si Main Trail


Frontcountry Trail Run - Mount Si Main Trail

Power hike up, run down. A great conditioner for climbers, scramblers, and runners. Also a good change to practice downhill running at night. Please be comfortable with the planned pace before signing up.

COVID-19: Learn about our most up-to-date guidance for participants and leaders on our COVID-19 Response page. All participants and leaders must agree to the COVID-19 Code of Conduct before participating in this Mountaineers activity.
  • Moderate/Strenuous
  • Challenging
  • Mileage: 8.0 mi
  • Elevation Gain: 3,150 ft

Meet at the TH ready to go at 6pm.

There will be a carpool leaving downtown Seattle around 5 for anyone interested.

This is a conditioning trail run with the idea of practicing power hiking up the hills and running downhill in the dark and on snow. We will maintain a steady pace stopping only at the top for a quick break, before descending back to the cars at the TH.

At least part of the decent will be in the dark, so you need to have a headlight or some other light source.

Plan on needing microspikes.

I expect the total round trip time to be be between 2 & 2.5 hours.

While there is no leader's permission required for this run, please be comfortable with being able to do this hike/run in 2 to 2.5 hours (1.5 hours up & 1 down).


Mount Si Main Trail

Required Equipment

Required Equipment

  • The Ten Essentials
  • Sturdy running shoes
  • microspikes
  • good light source (headlight, waist belt, etc.)
  • pack with weight is optional
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