There are
1,787 mi
from Sioux City, IA to Greenfield, CA
That's the driving distance. It would take 1 day 7 hours to go from Sioux City, Iowa to Greenfield, California.
The flight distance (direct flight from Sioux City, IA to Greenfield, CA) is 1,387.37 mi.
1,787 mi = 1.61 kms