There are
495 mi
from Champaign, IL to Maryville, TN
That's the driving distance. It would take 9 hours 16 mins to go from Champaign, Illinois to Maryville, Tennessee.
The flight distance (direct flight from Champaign, IL to Maryville, TN) is 380.63 mi.
495 mi = 796.00 kms