US 50 (Lee-Jackson Memorial Highway) in Chantilly State Route 657 in Fairfax County, Virginia is a secondary state highway which traverses the western portion of the county.

The southern section of Walney Road passes through Ellanor C. Lawrence Park.

North of US 50, SR 657 becomes Centreville Road, a divided highway, mostly four lanes wide except at its northern end.

There are commercial districts at the southern and northern ends; otherwise most of Centreville Road also divides business parks from residential areas.

SR 657 was the primary travel route between Centreville and Herndon for much of the 20th century.