Nature Stock Photography Library - The Rocky Mountains, often called the Rockies, are a broad mountain range in western North America. The Rocky Mountains stretch more than 3,000 miles (4,800 kilometers) from British Columbia, in Canada, to New Mexico, in the United States. The highest peak is Mount Elbert, in Colorado, which is 14,440 feet (4,401 meters) above sea level. Mount Robson in British Columbia, at 12,972 feet (3,954 meters) is the highest peak in the Canadian Rockies. The Rocky Mountain System is a United States physiographic region. They are not to be confused with the Coast Ranges located along the Pacific Ocean coast of North America.