I've hunted the web on this. I know that Edmonton is closest to Jasper and Calgary is closest to Banff, and each have sizable Jewish communities (not sure which if these 2 cities is larger in terms of Orthodox shuls and kosher places).
I'm looking more specifically if there are any minyanim in or near either of these provincial parks. Perhaps, one of the hotels tends to have one? Would someone know? Where are they?