Miles between Portland, ME and Gaithersburg, MD

There are
542 mi
from Portland, ME to Gaithersburg, MD

That's the driving distance. It would take 11 hours 3 mins to go from Portland, Maine to Gaithersburg, Maryland.

The flight distance (direct flight from Portland, ME to Gaithersburg, MD) is 476.18 mi.

542 mi = 871.75 kms