There are
2,001 mi
from Walnut Creek, CA to Macomb, IL
That's the driving distance. It would take 1 day 10 hours to go from Walnut Creek, California to Macomb, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Macomb, IL) is 1,681.64 mi.
2,001 mi = 3,220.06 kms