There are
997 mi
from Rancho Cucamonga, CA to Parker, CO
That's the driving distance. It would take 17 hours 24 mins to go from Rancho Cucamonga, California to Parker, Colorado.
The flight distance (direct flight from Rancho Cucamonga, CA to Parker, CO) is 801.19 mi.
997 mi = 1,604.09 kms