There are
998 mi
from Sioux City, IA to Carlsbad, NM
That's the driving distance. It would take 19 hours 8 mins to go from Sioux City, Iowa to Carlsbad, New Mexico.
The flight distance (direct flight from Sioux City, IA to Carlsbad, NM) is 817.26 mi.
998 mi = 1,605.59 kms