Basic Alpine Climb - North Twin Sister/West Ridge


Basic Alpine Climb - North Twin Sister/West Ridge

A fantastic ridge route on a very rare and grippy rock from the Earth's mantle, the Twin Sisters Dunite. This is a mentored climb for Mike Hutchens. Please direct all permission requests to him using the Mountaineer's website request permission form. Emails to Emma will be ignored.

  • Mon, May 28, 2018
  • Seattle Climbing
  • Climbing
  • Basic Alpine
  • Adults
  • Basic Alpine Climb, Strenuous 2, Technical 1
  • Moderate
  • Mileage: 16.0 mi
  • Elevation Gain: 5,400 ft


We will use mountain bikes on the approach to the trail head, a  5 mile, 2000-ft section on forest roads each way. On the way up it will be a combination of riding and pushing. Riding all the way down from trail head. A bike on good working order required and some biking fitness and skills. 


North Twin Sister/West Ridge

  • Red Marker
    48.738540, -122.035489
    48.7385395008 -122.035489082
  • Red Marker
    48.715307, -121.998422
    48.7153070333 -121.998422064
Required Equipment

Required Equipment

  • The Ten Essentials
  • Mountain boots that can accept crampons (not hiking boots)
  • Crampons
  • An ice axe (not technical ice tools)
  • A back pack (40 to 60 liters)
  • Webbing and accessory cords
  • 6 straight gate carabiners
  • 2 locking carabiners
  • Large pear-shaped carabiner
  • Belay device
  • Climbing harness
  • Helmet
  • Chock pick (nut tool)
  • Rescue pulley
  • Fleece or puffy jacket
  • Rain jacket and full-zip rain pants
  • Belay gloves
  • Warm gloves or mittens
Trip Reports