I usually hike in trail running shoes. Never been to Canadian Rockies tho I have been to Colorado Rockies. Would you suggest hiking boots over trail running shoes for Banff? I'll Prob be doing Big beehive/6 Glaciers hike in June.
The valley of the 6 Glaciers is a wonderful hike. Trail shoes are fine but you will encounter scree and rocks that might make a hiking boot a better choice. But you can do it. And not a high ankle boot. Just a hiking shoe with firm soles. (And make sure they are broken in.)
