There are
781 mi
from Dayton, OH to Sioux City, IA
That's the driving distance. It would take 14 hours 28 mins to go from Dayton, Ohio to Sioux City, Iowa.
The flight distance (direct flight from Dayton, OH to Sioux City, IA) is 662.31 mi.
781 mi = 1,257.26 kms