There are
1,872 mi
from Rancho Cucamonga, CA to Paducah, KY
That's the driving distance. It would take 1 day 9 hours to go from Rancho Cucamonga, California to Paducah, Kentucky.
The flight distance (direct flight from Rancho Cucamonga, CA to Paducah, KY) is 1,635.46 mi.
1,872 mi = 1.61 kms