There are
2,394 mi
from Walnut Creek, CA to Winchester, KY
That's the driving distance. It would take 1 day 17 hours to go from Walnut Creek, California to Winchester, Kentucky.
The flight distance (direct flight from Walnut Creek, CA to Winchester, KY) is 2,049.60 mi.
2,394 mi = 3,852.62 kms