Forbidden Peak Climb

This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
Very Hard
This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
This reflects the return distance of this route as measured by the GPS file.
16.9 km
This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
1,738 m
User Ratings
These ratings are completed by users who have completed this trail and not subject to reviews by 10Adventures.
Be the first to add a review!
Directions to Trailhead

Forbidden Peak is one of Washington’s 100 steepest climbs, and it is a Class 5 climb only recommended for those with mountaineering experience and the proper gear. The horn-shaped summit offers remarkable views in all directions, and each ascent approach offers great rock quality. The West Ridge is the most commonly climbed route, likely due to its inclusion in the 50 Classic Climbs in North America.

Guide-book quality info for over 8,000 trails

View Forbidden Peak Climb on Map

View Map

Subscribe to our newsletter

Get a weekly dose of discounts and inspiration for adventure lovers

Route Description for Forbidden Peak Climb

Forbidden Peak is not a day hike. This peak is Alpine Grade II-III and 5.2-5.8 depending on the route. While hikers can get part way up the summit, it is unreachable without mountaineering experience and equipment. For those who do summit, astounding views can be seen in all directions.

Forbidden Peak is one of the most popular mountains in the Cascades for its excellent routes, great rock quality, and incredible views. Selected Climbs in the Cascades by Potterfield and Nelson states that "there is no easy way off Forbidden Peak; it is one of the most difficult descents in the range." It’s well worth doing if you have the appropriate experience. Anybody can enjoy the sight of the pointed peak from afar.

Getting to the Forbidden Peak Climb Trailhead

Forbidden Peak is accessed via Boston Basin. Climbers often use the Cascade Pass trailhead.

Route Information

  • When to do


  • Backcountry Campsites


  • Family friendly


  • Route Signage


  • Crowd Levels


  • Route Type

    Out and back

Forbidden Peak Climb Elevation Graph

Weather Forecast

Check Area Weather

Forbidden Peak Climb Reviews

Add a comment

You must be logged in to post a comment.

Nearby Trails

Nearby Regions

Subscribe to our newsletter

Get a weekly dose of discounts and inspiration for adventure lovers