Miles between Troy, MI and Gaithersburg, MD

There are
521 mi
from Troy, MI to Gaithersburg, MD

That's the driving distance. It would take 9 hours 47 mins to go from Troy, Michigan to Gaithersburg, Maryland.

The flight distance (direct flight from Troy, MI to Gaithersburg, MD) is 392.01 mi.

521 mi = 838.53 kms