Presenting an elegant conical shape that rises to 10,047 feet, the center of the Three Sisters can most easily be reached from the northwest side where a high ridge runs between North and Middle Sisters at almost 9,000 feet.

The popular trail from Sunshine passes through some of the most scenic volcanic areas in the Cascades, passing formations of obsidian volcanic glass, and leading to the Renfrew glacier which flows between these two mountains.

From the south routes start at Pole Creek trail head or more directly from remote Camp Lake which rests dramatically between Middle Sister and South Sister.