There are
1,729 mi
from Sioux City, IA to Santa Maria, CA
That's the driving distance. It would take 1 day 6 hours to go from Sioux City, Iowa to Santa Maria, California.
The flight distance (direct flight from Sioux City, IA to Santa Maria, CA) is 1,390.54 mi.
1,729 mi = 1.61 kms