There are
2,050 mi
from Louisville, KY to Rancho Cucamonga, CA
That's the driving distance. It would take 1 day 12 hours to go from Louisville, Kentucky to Rancho Cucamonga, California.
The flight distance (direct flight from Louisville, KY to Rancho Cucamonga, CA) is 1,789.37 mi.
2,050 mi = 3.22 kms