The Georgetown Loop Railroad is a 3 ft (914 mm) narrow gauge United States heritage railroad located in the Rocky Mountains in Clear Creek County, adjacent to Interstate 70 in Colorado. This tourist train runs between the communities of Georgetown and Silver Plume, a distance of 2 miles (3.2 km). The route is 4.5 miles (7.2 km) long and ascends an elevation of 640 feet (195.1 m) through mountainous terrain along with trestles, cuts, fills, and a grand loop.