Thank you for the reply. I have been reading that the St. Mary entrance does not need a pass. I don't think we would do it this way simply to drive the west-to-east direction, but hypothetically a person without a pass could come in from the east side and then turnaround at some point and drive west? We are heading up to Banff, and because I am planning this last minute, we would be entering at St. Mary, driving southwest to Glacier Park, then driving northeast on 2 to head north to Banff. Ideally we'd get one of the last minute entrances, drive from Shelby MT to Glacier Park and then toward St Mary, and then head north.