State Route 613 in Fairfax County, Virginia is a secondary state highway. The designation includes several distinct suburban surface routes within the county. These routes were once mostly connected, but changes in road alignment, new road construction, and annexations by the independent city of Alexandria have separated them. These routes are signed only sporadically as 613 and local residents usually refer to these routes by their names.

Virginia State Route 7 (VA 7) is a major primary state highway and busy commuter route in northern Virginia, United States. It travels southeast from downtown Winchester to SR 400 in downtown Alexandria. Its route largely parallels those of the Washington & Old Dominion Trail and the Potomac River. Between its western terminus and Interstate 395 (I-395), SR 7 is part of the National Highway System. In 1968, the Virginia State Highway Commission designated the road as the "Harry Flood Byrd Highway" between Alexandria and Winchester to commemorate Harry F. Byrd Sr. (1887–1966).