 SR 8 is part of a two-state highway 8 system and is the main north–south highway of Patrick County, Floyd County, and southern Montgomery County, connecting their respective county seats of Stuart, Floyd, and Christiansburg with each other and with the Blue Ridge Parkway.The state highway also links the New River Valley region of Virginia with Southside Virginia via US 58 and the Piedmont Triad of North Carolina via NC 8.SR 8 begins at the North Carolina state line near Palmetto.