There are
1,653 mi
from Sioux City, IA to Fairfield, CA
That's the driving distance. It would take 1 day 4 hours to go from Sioux City, Iowa to Fairfield, California.
The flight distance (direct flight from Sioux City, IA to Fairfield, CA) is 1,375.55 mi.
1,653 mi = 2,660.90 kms