The mountain range that runs along the border of the United States and Canada is the Rocky Mountains. This extensive range spans over 3,000 miles from northern British Columbia in Canada to New Mexico in the United States. The Rockies are known for their stunning scenery, diverse ecosystems, and various outdoor recreational opportunities, including skiing, hiking, and camping. This mountain range is also home to several national parks, such as Rocky Mountain National Park in Colorado and Yoho National Park in Canada.