There are
2,106 mi
from Champaign, IL to Clearlake, CA
That's the driving distance. It would take 1 day 13 hours to go from Champaign, Illinois to Clearlake, California.
The flight distance (direct flight from Champaign, IL to Clearlake, CA) is 1,822.39 mi.
2,106 mi = 3.22 kms