There are
2,346 mi
from Union City, CA to Jeffersontown, KY
That's the driving distance. It would take 1 day 16 hours to go from Union City, California to Jeffersontown, Kentucky.
The flight distance (direct flight from Union City, CA to Jeffersontown, KY) is 1,976.62 mi.
2,346 mi = 3.22 kms