Glacier is awesome , The Tetons and Yellowstone are along the way as well and are both just as impressive as Glacier in different ways. If you can swing staying at the Chateau Lake Louise I highly recommend it for one night , but theres lots of great camping there if not.Texas TJ said:Banff and Jasper NP. Don't want to get too deep into Canada without other rigs going. Plus a few stops along the way, like Glacier NP.
I have been through all of these areas many times if you have any questions.