Miles between Gaithersburg, MD and Marion, OH

There are
421 mi
from Gaithersburg, MD to Marion, OH

That's the driving distance. It would take 8 hours 9 mins to go from Gaithersburg, Maryland to Marion, Ohio.

The flight distance (direct flight from Gaithersburg, MD to Marion, OH) is 329.73 mi.

421 mi = 678.05 kms