There are
2,090 mi
from Walnut Creek, CA to Bartlett, IL
That's the driving distance. It would take 1 day 12 hours to go from Walnut Creek, California to Bartlett, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Bartlett, IL) is 1,804.56 mi.
2,090 mi = 3,363.12 kms