Layne Peters

The Four Day Rainier Climb is the classic route to the summit of Mount Rainier and the most common path climbers take into high-altitude mountaineering, following the standard south-side routes through glaciated terrain to one of North America's most recognizable peaks. It's a serious alpine objective that rewards preparation, fitness, and focus — for many climbers, the moment mountaineering becomes real, yet still within reach of well-prepared first-timers. Being able to say "I've been on top of that" while driving I-5 or flying out of Sea-Tac is an incredible achievement.

The climb begins with a half day orientation at BaseCamp, followed by a full day of mountaineering school on the mountain, then ascends to Camp Muir, where teams stay in the private hut RMI uses — the only guide service with its own shelter at Camp Muir. Throughout, you climb in small rope teams at a 2:1 climber-to-guide ratio — closer instruction, steadier pacing, and more attention on summit day. Before and after, your team is based at Rainier BaseCamp in Ashford, home to the BaseCamp Bar & Grill, Whittaker Mountaineering, and Whittaker's Bunkhouse.