Miles between Philadelphia, PA and Gaithersburg, MD

There are
143 mi
from Philadelphia, PA to Gaithersburg, MD

That's the driving distance. It would take 2 hours 58 mins to go from Philadelphia, Pennsylvania to Gaithersburg, Maryland.

The flight distance (direct flight from Philadelphia, PA to Gaithersburg, MD) is 122.10 mi.

143 mi = 230.57 kms