Miles between Gaithersburg, MD and Dyer, IN

There are
660 mi
from Gaithersburg, MD to Dyer, IN

That's the driving distance. It would take 12 hours 15 mins to go from Gaithersburg, Maryland to Dyer, Indiana.

The flight distance (direct flight from Gaithersburg, MD to Dyer, IN) is 567.01 mi.

660 mi = 1,062.21 kms