Twin Sisters/Twin Sisters Traverse


Intermediate Alpine Climb - Twin Sisters/Twin Sisters Traverse

Enjoy a two-day trip of mountain biking, scrambling and alpine climbing in the Twin Sisters Range!

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.
  • Intermediate Mountaineering Climb
  • Challenging
  • Mileage: 18.0 mi

4 a.m. from Nooksack River.  Plan to car camp on either end of trip as it will be long days.

Priority will be given to Tacoma Branch Intermediate students until July 15 (other branch members should not inquire until then).  Expect to bivy (don't plan on there being sufficient area for a tent).  Participants should expect unroped exposed scrambling. 


Twin Sisters/Twin Sisters Traverse

Required Equipment

Required Equipment

  • The Ten Essentials
  • Mountain bike
  • Mountain boots that can accept crampons (not hiking boots)
  • Crampons
  • An ice axe (not technical ice tools)
  • A sleeping bag rated to +20 degrees or colder
  • A sleeping pad
  • A back pack (40 to 60 liters)
  • Webbing and accessory cords
  • 6 straight gate carabiners
  • 2 locking carabiners
  • Large pear-shaped locking 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
  • Cordellete
  • Picket or other relevant protection
  • Extra webbing or cord
Trip Reports