You could take #2 to Cardston, go through the town and turn west(left) on #5, which takes you past the Waterton National Park entrance. If you don't want to stop there continue on and you will be on #6 which takes you up to Pincher Creek. Go through, the sort of outskirts, of Pincher Creek to #3, turn west and go to #22(Cowboy Highway) and turn north(right). As mentioned you can go up to Longview and turn west(left) and catch 40 or keep going and go through Black Diamond up to 22x turn west(left). You will continue on through Bragg Creek to #1 which will take you to Banff etc. I don't know why you would want to go up to Calgary and then to Banff that way. It's almost like doubling back east and then north and then west. The way I mentioned, as others, is a good highway and you travel through the foothills on 22. I have taken that route many times although I cross the border at Sweetgrass/Coutts. You can go straight up 15 to Sweetgrass/Coutts unless you plan to stop in Glacier. If you go through Coutts then you would go up #4 to 501 which is just a couple of miles up the highway out of Coutts. Go west(left) and take it all the way to #2 and go north(right) to Cardston. Stay in the left hand lane to turn onto 501. Any of these routes have great scenery and as I said the highways are very good. 501 is pretty barren of houses/ranches but nice all the same. Fill up with gas in Coutts or Sweetgrass. Sweetgrass has a duty free shop. As for height I am 13ft 6 and have never ever had a problem in Alberta. North of Edmonton watch out for clearances, as I haven't been that far. This is a tad long but every bit helps. Stay safe and have a great trip. We're heading to Alberta in June ourselves.
