There are
786 mi
from Sioux City, IA to Terrell, TX
That's the driving distance. It would take 14 hours 1 min to go from Sioux City, Iowa to Terrell, Texas.
The flight distance (direct flight from Sioux City, IA to Terrell, TX) is 674.66 mi.
786 mi = 1,265.04 kms