The Pierre Subdivision is an east–west railway line owned and operated by the Rapid City, Pierre and Eastern Railroad (RCPE), a subsidiary of Genesee & Wyoming. The line stretches approximately 118 miles (190 km) across the central parts of South Dakota, connecting Pierre, South Dakota with Huron, South Dakota. It is also a part of the RCPE's east–west main route. Traffic on this line is solely freight traffic.