There are
463 mi
from Haverhill, MA to Gaithersburg, MD
That's the driving distance. It would take 9 hours 33 mins to go from Haverhill, Massachusetts to Gaithersburg, Maryland.
The flight distance (direct flight from Haverhill, MA to Gaithersburg, MD) is 406.14 mi.
463 mi = 744.95 kms