There are
776 mi
from Mckinney, TX to Champaign, IL
That's the driving distance. It would take 14 hours 28 mins to go from Mckinney, Texas to Champaign, Illinois.
The flight distance (direct flight from Mckinney, TX to Champaign, IL) is 666.56 mi.
776 mi = 1,249.11 kms