US 2 is a vital northern corridor for Montana. The road has more of its mileage within Montana than in any other state. It passes through three Indian reservations, comes very close to two others, and skirts the southern border of Glacier National Park. Most of the Montana segment of US 2 runs close to the northern BNSF Railway main line, and parts of the highway show up in the Microsoft Train Simulator depiction of the Marias Pass route.