The West Ridge of Forbidden Peak is an exhilarating alpine adventure deep within the heart of North Cascades National Park. The route involves a technical ascent to the ridge crest via steep snow or moderate rock, followed by wild and exposed ridge climbing to the summit. Highlights include knife edge traverses, and short steps of rock up to 5.6.

Boston Basin, Forbidden Peak, and the surrounding mountains and glaciers form an inspiring alpine paradise that cries out to be explored. Confidently push your limits with one of our experienced guides on a customized ascent of the West Ridge of Forbidden.


Baker Mountain Guides offers custom ascents of the West Ridge. We recommend a three-day itinerary.

  • Day 1: Approach

    We’ll rendezvous in Marblemount at 7:30 AM. Your guide will conduct a meet-and-greet and gear check, and supply guests with group equipment. We’ll travel up the Cascade River Valley to the trailhead. A challenging approach is rewarded with the splendor of Boston Basin.

  • Day 2: Summit Day

    Our day will begin long before dawn. We’ll ascend snow and technical rock to gain the ridge. Exposed scrambling and short, steep sections of moderate rock characterize the final push to the summit. We’ll rappel and downclimb the route back to camp.

  • Day 3: Descent

    On our final day, we’ll wake at a reasonable hour and eat a hearty breakfast. Afterwards, we’ll pack up camp, and descend through Boston Basin to the trailhead.

Each Adventure is Unique

Featherweight Guarantee

Let’s face it: climbing and skiing are more fun without a massive pack. That’s why we strive to offer the lightest pack weight of any guide service. We plan meticulously, use quality equipment, and always share the load. Minimalism and teamwork are guiding values in our pursuit to craft authentic mountain adventures.

Program Information

  • Season
  • June – October

  • Duration
  • 3 Days

  • Max Ratio
  • 2 Clients to 1 Guide

  • Equipment

  • Schedule
  • 2021 Season

    • June 15 - 17

      All trips have a confirmed backcountry permit

  • Cost
  • $1650/ Person – Private


    $1050 / Person – Group of 2


    Cost Includes

    • Tents
    • Fuel
    • Breakfasts and Dinners