U.S. Route 191 in Montana

U.S. Highway 191 marker
U.S. Highway 191
Map
US 191 highlighted in red
Route information
Maintained by MDT
Length442.161 mi[1] (711.589 km)
Major junctions
South endYellowstone National Park at West Yellowstone
Major intersections
North end Highway 4 at the Canadian border at Morgan
Location
CountryUnited States
StateMontana
CountiesGallatin, Park (Wyoming), Park (Montana), Sweet Grass, Wheatland, Fergus, Phillips
Highway system
MT 141 MT 200

U.S. Highway 191 (US 191) is a north-south United States Numbered Highway in the state of Montana. It extends approximately 442.2 miles (711.7 km) from Yellowstone National Park north to the Canadian border.

  1. ^ Road Inventory and Mapping Section (2013). Montana Road Log (PDF). Helena: Montana Department of Transportation. pp. 41, 90–93, 96–97, 103–107, 159, 181–182, 208. Archived from the original (PDF) on January 1, 2020. Retrieved November 27, 2020.