There are
1,657 mi
from Sioux City, IA to Oxnard, CA
That's the driving distance. It would take 1 day 5 hours to go from Sioux City, Iowa to Oxnard, California.
The flight distance (direct flight from Sioux City, IA to Oxnard, CA) is 1,355.29 mi.
1,657 mi = 1.61 kms