About Tennessee Pass is a high mountain pass located in the Rocky Mountains of central Colorado in the United States.The pass traverses the continental divide north of Leadville in a gap between the northern end of the Sawatch Range to the west and the northern end of the Mosquito Range to the east. It is historically significant as a transportation route between the valleys of the Arkansas and Eagle rivers, and was used by the Denver and Rio Grande Western and Union Pacific as a major rail artery until 1997. The full line is 228 miles (366.93 km) Rollingstock EMD GP40-2 EMD GP40M-2 EMD GP60 EMD SD40R EMD SD40-2 EMD SD40T-2 EMD SD40M-2 EMD SD45 EMD SD45R
