The highway's eastern terminus, about  west of Bozeman, is a location known locally as "Four Corners." From Four Corners, US 191 runs east to Bozeman, and south to West Yellowstone; Highway 84 travels west to Norris; and Montana Highway 85 runs north to Belgrade.
The eastern extremity of the highway is situated roughly west of Bozeman, and it's locally referred to as "Four Corners." From Four Corners, US 191 heads east towards Bozeman and south towards West Yellowstone; meanwhile, Highway 84 travels west to Norris, while Montana Highway 85 runs north to Belgrade.