There are
1,984 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.
1,984 mi = 3,193.69 kms