Located in Peter Lougheed Provincial Park is the highest hiking trail in the Canadian Rockies. At the summit of Mount Allen the trail is 2840 meters above sea level. The trail to Olympic Pass, Centennial Pass and Mount Allen was built by the Rocky Mountain Ramblers over three years starting in 1966. There is a plaque in the rock garden commemorating this groups effort. See the post for the Centennial Pass to Mount Allen Trail for directions to the trail and some details of the route. The hike starts near the Nakiska Ski area. For some reason I had it in my mind that I would spend half the day hiking up a ski run and were it not for the fact that this trail is reputed to be the highest in the Canadian Rockies I would have convinced the others in my group to find a different trail.
After walking approximately 1.7 kilometers and crossing Coal Mine Trail for the second time you will be on Centennial Pass Trail. The trail goes through the forest to the tree line breaking into a couple of openings with views of Mount Bogart to the west.
Once the forest is behind you the trail climbs aggressively, 700 meters in elevation over approximately 2 kilometers, that is close to a 30% grade. The trail switchbacks on the grassy hillside. It is every bit as steep as it appears in this photo.