There are
759 mi
from Garland, TX to Sioux City, IA
That's the driving distance. It would take 13 hours 35 mins to go from Garland, Texas to Sioux City, Iowa.
The flight distance (direct flight from Garland, TX to Sioux City, IA) is 662.55 mi.
759 mi = 1,221.65 kms