There are
985 mi
from Sioux City, IA to Fredericksburg, TX
That's the driving distance. It would take 17 hours 57 mins to go from Sioux City, Iowa to Fredericksburg, Texas.
The flight distance (direct flight from Sioux City, IA to Fredericksburg, TX) is 855.66 mi.
985 mi = 1,585.20 kms