There are
2,102 mi
from Walnut Creek, CA to Elmhurst, IL
That's the driving distance. It would take 1 day 12 hours to go from Walnut Creek, California to Elmhurst, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Elmhurst, IL) is 1,817.45 mi.
2,102 mi = 3,383.24 kms