Calculate route from Gaithersburg (Maryland, United States) to Portsmouth (Virginia, United States).

The flight distance (as the crow flies) between Gaithersburg and Portsmouth is 268.4 km.

Roadmap (route) to go from Gaithersburg to Portsmouth detailed above, you can also see the course layout on the map.

While doing trip Gaithersburg - Portsmouth by car, the calculated route ends at a distance , or more straight.