Forbidden Peak – West Ridge
8,815FT / 2,686M | WashingtonForbidden Peak - West Ridge
- Washington State
- Pack Weight: 40-50Lbs
- 4 Days
- Dates & Pricing
Forbidden Peak sits at the heart of the North Cascades and is one of the most coveted alpine rock climbs in the region. With solid rock, an exposed summit ridge, and a commanding position surrounded by spectacular peaks, the mountain offers a classic Cascades climbing experience.
The West Ridge, featured in the iconic Fifty Classic Climbs of North America, is an elegant and highly sought-after line that follows an airy crest of rock high above Boston Basin. After a demanding approach, climbers ascend steep snow to gain the ridge before tackling enjoyable, sustained alpine rock climbing on the way to Forbidden’s dramatic summit.
This climb is ideal for mountaineers with basic rock skills, looking to develop efficiency and confidence on moderate rock routes in the alpine. Combined with our Intro to Alpine Rock Climbing Course, the West Ridge of Forbidden Peak forms an excellent progression for climbers preparing for more technical objectives like The Matterhorn.
Key Components
Guide Ratio: A low 2:1 climber-to-guide ratio
Guide Expertise: Deep technical knowledge, global expedition experience, and a strong emphasis on teaching
Extended Itinerary: Four-day itinerary with an alternative summit day for inclement weather or climbing an additional peak in the Boston Basin area
Meals: Guides prepare meals at each camp
Group Gear: All group climbing equipment and tents provided
Team Size: A small group size of climbers—an intimate, high-attention environment ideal for skill development
Gear Support: Full-service gear department for expert equipment support and rentals
Future Climbs: Prepares climbers for more advanced Alpine Ascents climbs, such as the Matterhorn
Skills Training: Skill development in technical alpine climbing
The Alpine Ascents Way
Climbing Forbidden Peak with Alpine Ascents means approaching this rewarding objective with the guidance, preparation, and attention to detail that define our programs. Our climbs are led by professional, full-time guides with extensive experience in the Cascades and mountain ranges around the world. Known for their strong judgment, teaching ability, and leadership in complex terrain, our guides are committed to helping climbers move efficiently and confidently through alpine rock and snow.
Our 2:1 climber-to-guide ratio allows for personalized coaching and a supportive team environment throughout the climb. Prior to heading into the mountains, climbers meet at Alpine Ascents headquarters for an in-person gear check with the guide team, ensuring equipment is properly fitted and appropriate for current conditions. This preparation allows climbers to arrive at the trailhead fully organized and ready to climb.
Equally important is our ability to adapt to the dynamic nature of the mountains. With multiple days in the itinerary and deep familiarity with the terrain around Boston Basin, our guides maintain flexibility in route timing and daily plans to make the most of weather and conditions. This thoughtful approach—combined with strong logistics and experienced leadership—helps create a climbing experience true to the spirit of North Cascades alpine climbing.
The Mountain
Forbidden Peak (8,815 ft) rises prominently above Boston Basin in the heart of North Cascades National Park. The peak is surrounded by a dramatic concentration of glaciers, granite spires, and deeply carved alpine valleys. The mountain’s rugged profile is the result of millions of years of tectonic uplift and glacial erosion that shaped the jagged skyline of the North Cascades. Today, climbers approaching through Boston Basin travel beneath sweeping glaciers and towering rock walls that give the area its reputation as one of the most spectacular alpine environments in Washington.
The first recorded ascent of Forbidden Peak was made in 1940 via the West Ridge—the same elegant line followed on our climb today. The route quickly gained recognition for its aesthetic position and engaging alpine rock climbing, later earning a place in the landmark guidebook Fifty Classic Climbs of North America. Since then, the West Ridge has become one of the most sought-after alpine routes in the Cascades.
Like many peaks in the North Cascades, the area surrounding Forbidden Peak holds deep cultural significance to Indigenous peoples who have lived in and traveled through these mountains for generations. The surrounding landscapes—including the valleys, rivers, and high passes of the North Cascades—form part of the traditional homelands of several Coast Salish peoples. Today the region is protected within North Cascades National Park, preserving both its ecological richness and its enduring cultural connections.
