There are
766 mi
from Huntsville, AL to Marshalltown, IA
That's the driving distance. It would take 14 hours 43 mins to go from Huntsville, Alabama to Marshalltown, Iowa.
The flight distance (direct flight from Huntsville, AL to Marshalltown, IA) is 610.28 mi.
766 mi = 1,232.51 kms