The Mazamas offers a variety of classes for all ability levels. Learn new skills in mountaineering, rock climbing, first aid, ski mountaineering, and more.
North Sister, the fourth highest point in OR, and toughest of the Three Sisters, requires a range of climbing abilities and gear. The route is unpredictable and can have anything from exposed ice to moderate snow and 3rd class rock. Later season tends to be easier conditions. Large parties can take a long time on this route. The most popular approach for this route from the east, via the Pole Creek trailhead and the the Hayden Glacier, but you can also approach from the Collier Glacier