Martinsburg, West Virginia is approximatly 72.4 miles from Washington-Dulles International Airport (IAD). Driving time is about 1 hour 40 mins.
Rental cars available at this airport from: Alamo, Avis, Budget, Hertz, National Car Rental, Dollar Rent A Car, Enterprise, and Thrifty
For more information visit the Official Washington-Dulles International Airport site.