There are
1,322 mi
from Rockville, MD to Fargo, ND
That's the driving distance. It would take 1 day to go from Rockville, Maryland to Fargo, North Dakota.
The flight distance (direct flight from Rockville, MD to Fargo, ND) is 1,124.82 mi.
1,322 mi = 2,128.30 kms