There are
1,415 mi
from Mckinney, TX to Fullerton, CA
That's the driving distance. It would take 1 day to go from Mckinney, Texas to Fullerton, California.
The flight distance (direct flight from Mckinney, TX to Fullerton, CA) is 1,224.58 mi.
1,415 mi = 2,277.80 kms