There are
1,638 mi
from Sioux City, IA to Carlsbad, CA
That's the driving distance. It would take 1 day 4 hours to go from Sioux City, Iowa to Carlsbad, California.
The flight distance (direct flight from Sioux City, IA to Carlsbad, CA) is 1,307.74 mi.
1,638 mi = 1.61 kms