There are
688 mi
from Norridge, IL to Gaithersburg, MD
That's the driving distance. It would take 12 hours 54 mins to go from Norridge, Illinois to Gaithersburg, Maryland.
The flight distance (direct flight from Norridge, IL to Gaithersburg, MD) is 590.39 mi.
688 mi = 1,106.92 kms