Mount St. Helens/Worm Flows


Backcountry Ski/Snowboard - Mount St. Helens/Worm Flows

One day ski tour up the winter route. Fast and fun with conditioning in mind!

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.
  • Winter Scramble, M1-M2 Mountain 1-2 Ski, Technical 2, Strenuous 4
  • Moderate
  • Mileage: 12.0 mi
  • Elevation Gain: 5,700 ft
  • Pace: 2.5mph

Ideally, we will meet at the Marble Mountain Sno-park at 6am, do gear checks, and be skinning by 6:30am.

You need a Sno-Park pass to park, can be purchased at the local convenience store in Cougar. 


If I haven't skied with you before, please email me your experience level, ski tours you have done, overall conditioning, and the last time you practiced/reviewed avy rescue.  

This trip is weather and avy dependent. We will monitor forecasts and make a group decision based on our observations. Possible back up plan is to ski Camp Muir. 

My intention is to be moving at a steady pace with only a couple short breaks (15 min), but we will monitor how the group is doing overall. For me, this is partially a conditioning exercise for climbing season, which is why there is an emphasis on pace. Please do not sign up if you're looking for a slower, leisurely outing. Fast and fun!

Our general ski line will be the ascent route with slight deviations depending on comfort level and observations. 



Mount St. Helens/Worm Flows

  • USGS Mt St Helens

    Green Trails Mount St Helens NVM No. 332S

    Green Trails Mt St Helens NW No. 364S
  • See full route/place details.
Required Equipment

Required Equipment

  • The Ten Essentials
  • Boots, skis/snowboard, poles
  • Climbing skins (or other method to travel uphill on snow)
  • Avalanche shovel (metal blade)
  • Avalanche beacon
  • Avalanche probe
Trip Reports