There are
1,156 mi
from Parma, OH to Mckinney, TX
That's the driving distance. It would take 21 hours 1 min to go from Parma, Ohio to Mckinney, Texas.
The flight distance (direct flight from Parma, OH to Mckinney, TX) is 994.58 mi.
1,156 mi = 1.61 kms