There are
2,054 mi
from Walnut Creek, CA to Pekin, IL
That's the driving distance. It would take 1 day 11 hours to go from Walnut Creek, California to Pekin, Illinois.
The flight distance (direct flight from Walnut Creek, CA to Pekin, IL) is 1,735.07 mi.
2,054 mi = 3,305.75 kms