The PRC Subdivision is a railway line owned and operated by the Rapid City, Pierre and Eastern Railroad (RCPE), a subsidiary of Genesee & Wyoming.
The line is the company's important east–west route, connecting Pierre to Rapid City, both in South Dakota.
The route is not equipped with centralized traffic control or automatic block signalling systems.
In addition to freight yards located at Pierre and Rapid City, there are passing sidings at Philip and Wall.
There was also a spur track connection to Ellsworth Air Force Base at Box Elder.