There are
1,724 mi
from Hayward, CA to South Sioux City, NE
That's the driving distance. It would take 1 day 5 hours to go from Hayward, California to South Sioux City, Nebraska.
The flight distance (direct flight from Hayward, CA to South Sioux City, NE) is 1,391.34 mi.
1,724 mi = 1.61 kms