Miles between Boston, MA and Gaithersburg, MD

There are
442 mi
from Boston, MA to Gaithersburg, MD

That's the driving distance. It would take 9 hours 7 mins to go from Boston, Massachusetts to Gaithersburg, Maryland.

The flight distance (direct flight from Boston, MA to Gaithersburg, MD) is 390.58 mi.

442 mi = 710.93 kms