There are
1,991 mi
from Champaign, IL to Walnut, CA
That's the driving distance. It would take 1 day 10 hours to go from Champaign, Illinois to Walnut, California.
The flight distance (direct flight from Champaign, IL to Walnut, CA) is 1,677.97 mi.
1,991 mi = 1.61 kms