There are
1,557 mi
from Sioux City, IA to Rialto, CA
That's the driving distance. It would take 1 day 3 hours to go from Sioux City, Iowa to Rialto, California.
The flight distance (direct flight from Sioux City, IA to Rialto, CA) is 1,271.55 mi.
1,557 mi = 1.61 kms