There are
665 mi
from Champaign, IL to Shawnee, OK
That's the driving distance. It would take 12 hours 8 mins to go from Champaign, Illinois to Shawnee, Oklahoma.
The flight distance (direct flight from Champaign, IL to Shawnee, OK) is 578.01 mi.
665 mi = 1,069.81 kms