Miles between Rockville, MD and Smyrna, TN

There are
664 mi
from Rockville, MD to Smyrna, TN

That's the driving distance. It would take 12 hours 15 mins to go from Rockville, Maryland to Smyrna, Tennessee.

The flight distance (direct flight from Rockville, MD to Smyrna, TN) is 555.74 mi.

664 mi = 1,069.17 kms