There are
1,128 mi
from Sioux City, IA to Robstown, TX
That's the driving distance. It would take 20 hours 9 mins to go from Sioux City, Iowa to Robstown, Texas.
The flight distance (direct flight from Sioux City, IA to Robstown, TX) is 1,018.83 mi.
1,128 mi = 1.61 kms