There are
2,043 mi
from Rancho Cucamonga, CA to Louisville, KY
That's the driving distance. It would take 1 day 11 hours to go from Rancho Cucamonga, California to Louisville, Kentucky.
The flight distance (direct flight from Rancho Cucamonga, CA to Louisville, KY) is 1,789.37 mi.
2,043 mi = 3,288.57 kms