 U.S. Route 13 ( US 13 ) is a U.S. highway running from Fayetteville , North Carolina north to Morrisville , Pennsylvania . In the U.S. state of Delaware , the route runs for 103 @.@ 33 mi ( 166 @.@ 29 km ) . It traverses the entire length of the state from the Maryland state line in Delmar , Sussex County to the Pennsylvania state line in Millsboro . The route is signed north–south, but is actually a north–south route. The route is also known as the John F. Kennedy Memorial Highway in Delmar.
U.S. 13 is the main highway in Delmar, and it