We will be staying in Shelby, Mt before we cross into Canada, and were planning to cross at Sweetgrass. Looking at Google Earth, it looks like a really large and busy facility. Del Bonita crossing i...
I would go west through Cut Bank, Browing, and Babb to Carway. It is a smaller crossing where US 89 becomes Canada 2. We have had good luck at that crossing and 2 is a straight shot into Ft McCloud through Cardston.
If you have time Head Smashed In Buffalo Jump is interesting, also the LDS Temple in Cardston.
Being from Texas every time we pass through Sweetgrass they are convinced that we have several handguns onboard and usually spend a couple hours searching the rv and towed.