U.S. Route 191 is a north-south highway that stretches approximately 1,200 miles across the western United States. It begins in the state of Arizona, near the border with Mexico, and travels through several states, including Utah and Montana, before ending in Canada. The route is known for its scenic landscapes, including mountains, deserts, and forests. Originally designated as U.S. Route 91, it was renumbered in 1961 to avoid confusion with Interstate 91. Along its path, U.S. Route 191 passes through notable areas such as Grand Teton National Park and Arches National Park, making it a popular choice for travelers seeking natural beauty.