Delaware Route 1 (DE 1) is the longest numbered state highway in the U.S. state of Delaware. The route runs 102.63 mi (165.17 km) from the Maryland state line in Fenwick Island, Sussex County, where the road continues south into that state as Maryland Route 528 (MD 528), north to an interchange with Interstate 95 (I-95) in Christiana, New Castle County, where the road continues north as part of DE 7. Between Fenwick Island and Dover Air Force Base in Dover, Kent County, DE 1 is a multilane divided highway with at-grade intersections and occasional interchanges. The route heads north through the Delaware Beaches resort area along the Atlantic Ocean before it runs northwest through rural areas, turning north at Milford to continue to Dover. Upon reaching Dover, DE 1 becomes the Korean War Ve