If you go this route, be very wary of the weather. Don't go there if the sky is black. Trust me on this one. It is an hour-long stretch through the Porcupine Hills and there is no shelter, not even a tree. The weather through there can be freakish dangerous, with 40mph crosswinds, copious rain and hail they have to plow off the road. Go north on AB 2, where there is a town every twenty miles if you need to run for cover. Otherwise, it's a very nice drive. As scrollderf suggests, the road west from Longview through Kananaskis to Canmore is spectacular, but start with a full tank of gas. Highwood Pass opens on June 13 each year. The main highway is at the top, with Banff is a few miles west and Calgary an hour to the east. (Hi there!)The suggestions by dsfraser are very good. Another alternative is to continue east from Cranbrook BC to Highway 22 north near Pincher Creek Alberta. Continue north as far as Longview. This is called the Cowboy Trail. At Longview head west and north on highway 40, the Kananaskis Trail, a favorite of Calgary cyclists. At Highway 1 you may want to skip the big city of Calgary and head west to Banff and on from there. The Cowboy Trail and Kananaskis Trail are two of my favorite roads for both scenery and cycling.
Don't underestimate the ferocity of an Alberta thunderstorm. We get more hail here than anywhere else in the world and the Porcupine Hills are prime territory. I lived on the Wet Coast for years and the weather there is nothing like it. In 2013, Canmore was flooded out with 39" of rain in three hours. That's thirteen inches per hour, more than they ever get on the coast.Rain, not a problem. I live in the Pacific NorthWet. Hail and snow does not bother me too much IF I am caught out in it but I will not start my day thinking "I'll just ride my scooter 30 miles in the snow". I battle 40 to 50 MPH winds so often that it too is not a problem.
That's just part of riding, no more than a nuisance. Staying dry and warm is all that matters.What is a problem is when you can see the weather is turning bad so you stop and don the wet weather gear and then the sun pops out and here you are, "The Michelin Man" in 90 Degree F sunshine.