There are
1,270 mi
from Sioux City, IA to Brownsville, TX
That's the driving distance. It would take 22 hours 45 mins to go from Sioux City, Iowa to Brownsville, Texas.
The flight distance (direct flight from Sioux City, IA to Brownsville, TX) is 1,148.52 mi.
1,270 mi = 1.61 kms