There are
1,008 mi
from Mckinney, TX to Defiance, OH
That's the driving distance. It would take 18 hours 59 mins to go from Mckinney, Texas to Defiance, Ohio.
The flight distance (direct flight from Mckinney, TX to Defiance, OH) is 875.25 mi.
1,008 mi = 1.61 kms