Hello all. I'm hoping to get some input from everyone as to the best route to Yellowstone. My original plan was after leaving St. Louis, Mo heading to Mt. Rushmore, Yellowstone NP, Grand Tetons, and Portland Or. According to Streets & Maps I would take I-90 to US14 to the East Entrance of Yellowstone. However, now I understand that this is a very mountainous route and not the best choice for a RV pulling a toad. Any ideas? I'm driving a 37' Class A pulling a toad.
Thank you for the help!
Patty