There are
887 mi
from Gaithersburg, MD to Suamico, WI
That's the driving distance. It would take 16 hours 35 mins to go from Gaithersburg, Maryland to Suamico, Wisconsin.
The flight distance (direct flight from Gaithersburg, MD to Suamico, WI) is 673.31 mi.
887 mi = 1,426.76 kms