Tired of the fast pace of the Interstate System? In eastern Montana you can try the new Big Sky Byway travel route, which links the two major rivers in the state, the Yellowstone and the Missouri. This route follows a section of the historic Regina-Yellowstone (R-Y) Trail, which tourists from Canada used to reach Yellowstone National Park. The north-south orientation of the trail will give you a glimpse of dry land farming, rolling prairie grassland, scenic scoria buttes, and badlands terrain.