Calculate route from St. Charles (Maryland, United States) to South Boston (Massachusetts, United States).

The flight distance (as the crow flies) between St. Charles and South Boston is 646.3 km.

Roadmap (route) to go from St. Charles to South Boston detailed above, you can also see the course layout on the map.

While doing trip St. Charles - South Boston by car, the calculated route ends at a distance , or more straight.