There are
2,355 mi
from Concord, CA to Erlanger, KY
That's the driving distance. It would take 1 day 17 hours to go from Concord, California to Erlanger, Kentucky.
The flight distance (direct flight from Concord, CA to Erlanger, KY) is 2,010.95 mi.
2,355 mi = 3.22 kms