There are
2,092 mi
from Walnut Creek, CA to Crest Hill, IL
That's the driving distance. It would take 1 day 11 hours to go from Walnut Creek, California to Crest Hill, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Crest Hill, IL) is 1,810.55 mi.
2,092 mi = 3,366.58 kms