There are
301 mi
from Sioux Falls, SD to Marshalltown, IA
That's the driving distance. It would take 5 hours 43 mins to go from Sioux Falls, South Dakota to Marshalltown, Iowa.
The flight distance (direct flight from Sioux Falls, SD to Marshalltown, IA) is 218.40 mi.
301 mi = 485.20 kms