There are
825 mi
from Waterloo, IA to Gardendale, AL
That's the driving distance. It would take 15 hours 28 mins to go from Waterloo, Iowa to Gardendale, Alabama.
The flight distance (direct flight from Waterloo, IA to Gardendale, AL) is 679.98 mi.
825 mi = 1,328.27 kms