There are
1,648 mi
from Sioux City, IA to El Cajon, CA
That's the driving distance. It would take 1 day 5 hours to go from Sioux City, Iowa to El Cajon, California.
The flight distance (direct flight from Sioux City, IA to El Cajon, CA) is 1,304.44 mi.
1,648 mi = 2,651.71 kms