There are
1,583 mi
from Kansas City, MO to El Cajon, CA
That's the driving distance. It would take 1 day 4 hours to go from Kansas City, Missouri to El Cajon, California.
The flight distance (direct flight from Kansas City, MO to El Cajon, CA) is 1,321.53 mi.
1,583 mi = 1.61 kms