The Kingsport Subdivision (also KP Subdivision) is a 133.2-mile (214.4 km) railroad line owned and operated by CSX Transportation in the U.S. states of Kentucky, Virginia, and Tennessee. It was formerly part of the Huntington West Division. It became part of the CSX Florence Division on June 20, 2016. Running from Elkhorn City, Kentucky, south to Erwin, Tennessee, it forms the north half of the former Clinchfield Railroad; the south half, from Erwin to Spartanburg, South Carolina, is now the Blue Ridge Subdivision. From Elkhorn City, the line continues north as the Big Sandy Subdivision to Catlettsburg, Kentucky, on the Ohio River; trains can then continue to Ohio and other Midwest points. From Spartanburg, trains can continue to Georgia, Florida, or other Southeast states.