There are
2,560 mi
from Rancho Cucamonga, CA to Frederick, MD
That's the driving distance. It would take 1 day 21 hours to go from Rancho Cucamonga, California to Frederick, Maryland.
The flight distance (direct flight from Rancho Cucamonga, CA to Frederick, MD) is 2,235.57 mi.
2,560 mi = 3.22 kms