Virginia State Route 602 (Fairfax County)

SR 602 as Lawyers Road is a southern spur of SR 673, Lawyers Road, which forms the southern boundary of Reston and heads east into Vienna. This section of SR 602 is a four-lane divided road that travels northward between subdivisions of single-family homes.

At the intersection where Lawyers Road turns east as SR 673, SR 602 continues north as Reston Parkway. This road serves as the Main Street of busy Reston. It first passes SR 5320, Sunrise Valley Drive, which, to the east, is the address of many office buildings. It then passes SR 267, the Dulles Airport Access and Toll Roads, which lead to Dulles Airport, Leesburg, and Washington, D.C. via Interstate 66. The next major road that is passed is SR 675, Sunset Hills Road. This road goes to Herndon to the west, and many retail stores and offices to the east.

Traveling further north, one passes the Reston Town Center to the west, followed by many different retail and office centers. Reston Parkway then passes SR 606 (Baron Cameron Avenue), a major connector between Loudoun County and SR 7 (Leesburg Pike) toward Washington, D.C. The road continues through shopping centers and developments of single-family homes until it intersects with SR 7 (Leesburg Pike).

After short concurrencies with SR 7 (Leesburg Pike) and SR 193 (Georgetown Pike), SR 602 continues north as Seneca Road, a two-lane road. This road is the westernmost north–south route in Great Falls that intersects with a primary state route, and so it is well traveled during commuting hours rush hour. The road passes by developments of large single-family homes, and the route ends at the Loudoun County border. It is considered a suburb fairfaxcounty.gov Great Falls. As Seneca Road continues into Loudoun County, it becomes a private road that serves only Lowes Island (Golf) Club. As well as hitting the Golf club the road hits the entrance of the Great Falls park fairfaxcounty.gov.