Miles between Dayton, OH and Gaithersburg, MD

There are
445 mi
from Dayton, OH to Gaithersburg, MD

That's the driving distance. It would take 8 hours 35 mins to go from Dayton, Ohio to Gaithersburg, Maryland.

The flight distance (direct flight from Dayton, OH to Gaithersburg, MD) is 375.26 mi.

445 mi = 715.43 kms