Miles between Gaithersburg, MD and St Marys, PA

There are
236 mi
from Gaithersburg, MD to St Marys, PA

That's the driving distance. It would take 4 hours 56 mins to go from Gaithersburg, Maryland to St Marys, Pennsylvania.

The flight distance (direct flight from Gaithersburg, MD to St Marys, PA) is 173.55 mi.

236 mi = 380.54 kms