There are
397 mi
from Waterloo, IA to Fergus Falls, MN
That's the driving distance. It would take 7 hours 24 mins to go from Waterloo, Iowa to Fergus Falls, Minnesota.
The flight distance (direct flight from Waterloo, IA to Fergus Falls, MN) is 320.20 mi.
397 mi = 639.26 kms