Mount St. Helens/Worm Flows

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-season (late fall, winter, and early spring). 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.

• Suitable Activities: Backcountry Skiing, Scrambling, Snowshoeing
• Snowshoeing Category: Intermediate
• Seasons: January, February, March, April, May, December
• Weather: View weather forecast
• View avalanche forecast.

• Difficulty: Strenuous 5, Technical 4, Winter Scramble
• Length: 12.0 mi
• Elevation Gain: 5,700 ft
• High Point: 8,363 ft

• Land Manager: Mount Saint Helens National Volcanic Monument
• Parking Permit Required:
• Recommended Party Size: 12
• Maximum Party Size: 14
• Maximum Route/Place Capacity: 12