TheThe route drawn on this API map is an approximation of the route that I rode. Neither Google Maps nor Google API Maps will draw a DRIVING or BICYCLING mode route from Flagg Ranch to West Yellowstone on US287 during the winter because the roads are closed, they may(?) show that route during summer months. This map was drawn using the DRIVING mode. Click on Park Roads - Yellowstone to get an open/closed status for the route.