There are
2,090 mi
from Walnut Creek, CA to Joliet, IL
That's the driving distance. It would take 1 day 11 hours to go from Walnut Creek, California to Joliet, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Joliet, IL) is 1,811.55 mi.
2,090 mi = 3,363.91 kms