Because I am the foolish sort, I'm riding my Kawasaki KE100 from Chicago to Bow, WA where my wife will be working on a tree farm. It's not the fastest of bikes, but it's fun. Current plan is to mostly use US-2, but I love the Glacier area and plan on riding through it, I also have an affinity to ride roads where "Old" has been added to its designation.
That said, I present The Route through NW Montana
This part is pretty well set, but I'm always open to ideas.
The main trip planning thread is here KE100 - Slow ride Chicago to Pacific Northwest