The Bow Valley stretches from the Mount Yamnuska area all the way to Lake Louise. The region is divided up into several sub-areas; Canmore Corridor which consists of all climbing areas from Mount Yamnuska to the park gates, Banff Region which starts at the park gates and extends to just past Johnston Canyon, and the Lake Louise area which extends from Castle Junction to the junction of Hwy 93 North and the Trans Canada Hwy.