There are
2,090 mi
from Joliet, IL to Walnut Creek, CA
That's the driving distance. It would take 1 day 11 hours to go from Joliet, Illinois to Walnut Creek, California.
The flight distance (direct flight from Joliet, IL to Walnut Creek, CA) is 1,811.55 mi.
2,090 mi = 3.22 kms