The Continental Divide National Scenic Trail (in short Continental Divide Trail (CDT)) is a United States National Scenic Trail with a length measured by the Continental Divide Trail Coalition of 3,028 miles (4,873 km) between the U.S. border with Chihuahua, Mexico and the border with Alberta, Canada. Frequent route changes and a large number of alternate routes result in the actual hiking distance to be between 2,700 miles (4,300 km) and 3,150 miles (5,070 km). The CDT follows the Continental Divide of the Americas along the Rocky Mountains and traverses five U.S. states — Montana, Idaho, Wyoming, Colorado, and New Mexico. In Montana near the Canadian border the trail crosses Triple Divide Pass (near Triple Divide Peak, from which waters may flow to either the Arctic Ocean, Atlantic Ocean