There are
206 mi
from Sioux City, IA to Maryville, MO
That's the driving distance. It would take 4 hours 3 mins to go from Sioux City, Iowa to Maryville, Missouri.
The flight distance (direct flight from Sioux City, IA to Maryville, MO) is 168.55 mi.
206 mi = 331.68 kms