We size up one of the most famous hikes in the Canadian Rockies...Jasper's "Skyline Trail" !!
4600ft elevation, 44km length.
There are campgrounds at 5 km, 8 km, 12 km, 19 km, 30 km, and 35 km.
https://en.wikipedia.org/wiki/Skyline_Trail_(Jasper_National_Park)