There are
2,126 mi
from Walnut Creek, CA to Winnetka, IL
That's the driving distance. It would take 1 day 12 hours to go from Walnut Creek, California to Winnetka, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Winnetka, IL) is 1,827.28 mi.
2,126 mi = 3,421.02 kms