Sofa Mountain is a 2,515-meter (8,251-foot) summit located in Waterton Lakes National Park, in Alberta, Canada. It is part of the Lewis Range which is a subset of the Canadian Rockies, and is the easternmost mountain in the Canadian Rockies, as well as the park. It is situated 5.4 km (3.4 mi) east of Vimy Peak, and the nearest higher neighbor is Crypt Peak, 4.6 km (2.9 mi) to the southwest. Topographic relief is significant as the north aspect rises over 1,220 meters (4,000 feet) above Middle Waterton Lake in approximately six kilometers (3.7 mi).