There are
2,503 mi
from Rancho Cucamonga, CA to Buffalo, NY
That's the driving distance. It would take 1 day 20 hours to go from Rancho Cucamonga, California to Buffalo, New York.
The flight distance (direct flight from Rancho Cucamonga, CA to Buffalo, NY) is 2,158.67 mi.
2,503 mi = 3.22 kms