There are
1,600 mi
from Lake Forest, CA to South Sioux City, NE
That's the driving distance. It would take 1 day 4 hours to go from Lake Forest, California to South Sioux City, Nebraska.
The flight distance (direct flight from Lake Forest, CA to South Sioux City, NE) is 1,303 mi.
1,600 mi = 1.61 kms