There are
228 mi
from Gaithersburg, MD to Secaucus, NJ
That's the driving distance. It would take 4 hours 38 mins to go from Gaithersburg, Maryland to Secaucus, New Jersey.
The flight distance (direct flight from Gaithersburg, MD to Secaucus, NJ) is 201.65 mi.
228 mi = 367.15 kms