There are
861 mi
from Champaign, IL to Southlake, TX
That's the driving distance. It would take 15 hours 7 mins to go from Champaign, Illinois to Southlake, Texas.
The flight distance (direct flight from Champaign, IL to Southlake, TX) is 698.87 mi.
861 mi = 1,385.46 kms