Hi,
Travel west in USA until you reach Glacier National Parks then turn north. On the Canadian side the park is called waterton national park. From there head to the Head-Smashed-In Buffalo Jump (a world heritage site). Next stop at Lundbreck falls which is just off the highway. Continue west to Frank's Slide Interpretive center.
Next stop Fernie BC, then north towards Radium Hotsprings. Wonderful pool and day spa.
Next stop Lake Louise (electric sites at campground).
My choice then would be to head north to the Columbia Ice Fields and then to Jasper.
Banff is lovely but it is a "tourist trap". Make it a day trip from Lake Louise.