Cumbres and Toltec Scenic Railroad

The Cumbres and Toltec Scenic Railroad, often abbreviated as the C&TSRR, is a 3 ft (914 mm) narrow-gauge heritage railroad that operates on 64 miles (103 km) of track between Antonito, Colorado, and Chama, New Mexico, in the United States. The railroad is named for two geographical features along the route: the 10,015-foot (3,053 m)-high Cumbres Pass and the Toltec Gorge. Originally part of the Denver and Rio Grande Western Railroad's narrow-gauge network, the line has been jointly owned by the states of Colorado and New Mexico since 1970.

The C&TSRR is one of only two remaining parts of the former D&RGW narrow-gauge network, the other being the Durango and Silverton Narrow Gauge Railroad (D&SNG), which runs between Durango and Silverton, Colorado. The railroad has a total of 10 narrow-gauge steam locomotives (5 operational) and 2 narrow-gauge diesel locomotives on its current roster. The railroad also operates two smaller former D&RGW steam locomotives, Nos. 315 (owned by the Durango Railroad Historical Society) and 168 (owned by the City of Colorado Springs, Colorado), for special events and excursions.