Miles between Gaithersburg, MD and Merrillville, IN

There are
650 mi
from Gaithersburg, MD to Merrillville, IN

That's the driving distance. It would take 12 hours 1 min to go from Gaithersburg, Maryland to Merrillville, Indiana.

The flight distance (direct flight from Gaithersburg, MD to Merrillville, IN) is 557.32 mi.

650 mi = 1,045.85 kms