There are
2,380 mi
from Parma, OH to El Cajon, CA
That's the driving distance. It would take 1 day 18 hours to go from Parma, Ohio to El Cajon, California.
The flight distance (direct flight from Parma, OH to El Cajon, CA) is 2,015.40 mi.
2,380 mi = 3.22 kms