Miles between Dayton, OH and Rockville, MD

There are
449 mi
from Dayton, OH to Rockville, MD

That's the driving distance. It would take 8 hours 42 mins to go from Dayton, Ohio to Rockville, Maryland.

The flight distance (direct flight from Dayton, OH to Rockville, MD) is 378.47 mi.

449 mi = 723.30 kms