Mount St. Helens/Worm Flows

A scramble of 12 miles with 5,700 feet of gain and the preferred winter route.

GETTING THERE

Take I-5 S and get off at exit 22 to merge onto Dike Access Rd.  Merge onto Dike Access Rd, then continue onto Old Pacific Highway. Take a slight left onto E Scott Ave, and at the traffic circle take the 2nd left onto Lewis River Rd. After about 30 miles, Lewis River Rd continues as Rd 90.  Take a left at NF-83, and after about 6 miles the Marble Mountain Sno-Park will be on the right.

Notes

  • Climbing permits are required and done by lottery with the land manager.
  • A Sno-Park parking permit may be needed during month of April for the Marble Mountain Sno-Park.

information FOR LEADERS

scheduling & permits

Only one Mountaineers group may schedule a trip at a time during the off "winter" season. Please check trip listings below to ensure you are the only group there on a given day. Multiple Mountaineers groups may schedule trips during the permitting season if each group has obtained a climbing permit.

  • Difficulty: Strenuous 5, Technical 4, Winter Scramble
  • Length: 12.0 mi
  • Elevation Gain: 5,700 ft
  • 8,363 ft
Map
  • USGS Mt St Helens
  • Green Trails Mount St Helens NVM No. 332S
  • Green Trails Mt St Helens NW No. 364S
Activities

Upcoming Activities

TAC MAC Scramble - Mount St. Helens/Worm Flows

Backcountry Skiing, Youth & Scrambling Field trip: Mountaineers Adventure Club - Tacoma
Snow scramble or backcountry ski. Conditioner for Rainier climb.
Difficulty: Strenuous 5, Technical 4, Winter Scramble
Sat, Mar 13, 2021
No Prerequisites
8 participants 0 instructors 2 chaperones
Registration closes Mar 11
Tacoma Branch

Basic Alpine Climb - Mount St. Helens/Worm Flows

Climbing Trip
Backcountry Skis/Splitboards required. Must have Basic Climbing Badge or Intermediate Climbing Badge (Student or Graduate).
Difficulty: Strenuous 5, Technical 4, Winter Scramble
Sat, Mar 20, 2021
Prerequisites, Leader's Permission Required
0 participants 0 leaders
Registration opens Mar 1
Foothills Branch

Intermediate Snowshoe - Mount St. Helens/Worm Flows

Snowshoeing Trip
Annual trip up Saint Helens before permitting season begins.
Difficulty: Very Strenuous
Sun, Mar 21, 2021
Prerequisites
1 participant on waitlist 0 leaders
Registration opens Feb 21
Foothills Branch

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

Backcountry Skiing Trip
Backcountry ski ascent/descent of Mt St Helens
Difficulty: Strenuous 5, Technical 4
Sun, Mar 28, 2021
Prerequisites, Leader's Permission Required
4 participants
Registration opens Dec 15
Foothills Branch

Seattle Basic SIG SNOW FT - SIG Snow Overnight (Snow Anchors & Belays, Crevasse Rescue, Snow Camping, & Roped Travel) - Mount St. Helens/Worm Flows

Climbing Field trip: Basic Alpine Climbing Course
SIG Snow Overnight (Snow Anchors & Belays, Crevasse Rescue, Snow Camping, Roped Travel)
Difficulty: Strenuous 5, Technical 4, Winter Scramble
Sat, Apr 17, 2021 - Sun, Apr 18, 2021
No Prerequisites, Leader's Permission Required
1 participant 0 instructors
Registration closes Apr 15
Seattle Branch
Trip Reports
Titles

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  • Chocolate Falls
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