There are
2,358 mi
from Walnut Creek, CA to Erlanger, KY
That's the driving distance. It would take 1 day 17 hours to go from Walnut Creek, California to Erlanger, Kentucky.
The flight distance (direct flight from Walnut Creek, CA to Erlanger, KY) is 2,013.94 mi.
2,358 mi = 3,795.31 kms