I actually was originally going to go up to Montana to visit some relatives and check out my grandfather's recently renovated cabin but that got postponed till like next month or so. But had I gone this weekend, I'd normally take route 20 instead of continuing on I-15 once I reach up to Idaho Falls. It's the same road that'd take you to Yellowstone. You'd get to see the Teton range, drive by the pine forest of Island park where we used to own two of our cabins at including my cousin's cabin, and have two different paths to take depending on where I'm heading. If I was going to my grandfather's house, I'd take the West Yellowstone road and go on route 191. I think that's one of my all time favorite drives and there's a place on the way called Howard Springs that in my opinion has the best drinking water. If I was going to my grandfather's cabin, I'd take route 287 that lead me to Ennis. There's lots of open land where you can see some wildlife which is very cool.