The mountain range that runs along the border of the United States and Canada is the Rocky Mountains. This extensive mountain range stretches from northern British Columbia in Canada to New Mexico in the United States. The Rockies are characterized by rugged peaks, deep valleys, and diverse ecosystems, supporting a variety of wildlife. They play a crucial role in both countries’ natural beauty and recreational opportunities, with national parks such as Banff and Yellowstone attracting outdoor enthusiasts year-round. The Rocky Mountains also influence weather patterns and water resources in the region.