There are
675 mi
from Mckinney, TX to Gardendale, AL
That's the driving distance. It would take 12 hours 2 mins to go from Mckinney, Texas to Gardendale, Alabama.
The flight distance (direct flight from Mckinney, TX to Gardendale, AL) is 567.35 mi.
675 mi = 1,086.55 kms