The Rocky Mountains are a large mountain range located in the western part of North America in the United States and Canada. The "Rockies" as they are also known, pass through northern New Mexico and into Colorado, Wyoming, Idaho, and Montana. In Canada, the range stretches along the border of Alberta and British Columbia. In total, the Rockies stretch for over 3,000 miles (4,830 km) and form the Continental Divide of North America.