Miles between Gaithersburg, MD and Mt Holly, NC

There are
421 mi
from Gaithersburg, MD to Mt Holly, NC

That's the driving distance. It would take 8 hours 4 mins to go from Gaithersburg, Maryland to Mt Holly, North Carolina.

The flight distance (direct flight from Gaithersburg, MD to Mt Holly, NC) is 338.50 mi.

421 mi = 676.76 kms