There are
2,091 mi
from Walnut Creek, CA to Lisle, IL
That's the driving distance. It would take 1 day 11 hours to go from Walnut Creek, California to Lisle, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Lisle, IL) is 1,810.86 mi.
2,091 mi = 3,365.48 kms