There are
2,500 mi
from Kissimmee, FL to Fullerton, CA
That's the driving distance. It would take 1 day 19 hours to go from Kissimmee, Florida to Fullerton, California.
The flight distance (direct flight from Kissimmee, FL to Fullerton, CA) is 2,183.34 mi.
2,500 mi = 4,023.38 kms