There are
2,087 mi
from Walnut Creek, CA to Elgin, IL
That's the driving distance. It would take 1 day 12 hours to go from Walnut Creek, California to Elgin, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Elgin, IL) is 1,799.54 mi.
2,087 mi = 3,359.06 kms