Which mountain range runs along the border between the United States and Canada?

The Rocky Mountains are the mountain range that runs along the border between the United States and Canada. This extensive mountain chain stretches over 3,000 miles, from Canada down through the western United States to New Mexico. It is characterized by its rugged terrain, high peaks, and stunning landscapes, including national parks like Yellowstone and Banff.

The geographical significance of the Rockies is notable, as they serve as a natural barrier and define the watershed for numerous rivers that flow toward the Pacific Ocean, as well as those that head toward the Atlantic and Arctic Oceans. The region features alpine ecosystems and is a vital area for biodiversity, attracting outdoor enthusiasts for activities such as hiking, skiing, and camping.

Other mountain ranges mentioned, such as the Appalachian Mountains, Andes Mountains, and Alps, do not share this border. The Appalachians are located in the eastern United States, the Andes run along the western edge of South America, and the Alps are in Europe, making them irrelevant to this particular geographical feature of the US-Canada border.