Evan-Thomas is not a tough hike from an elevation standpoint but it requires some tricky maneuvering through the canyon to get to the Green Monster ice fall.
This trail is close to Canmore and on the shorter side with less elevation than most hikes. It's a bit boring as it's in the trees for the majority of the hike with limited views.
Porcupine Ridge is a unique and challenging hike with a creek crossing combined with some scrambles but it has panoramic views once you break out of the trees.