There are
524 mi
from Rancho Cucamonga, CA to Ukiah, CA
That's the driving distance. It would take 9 hours 53 mins to go from Rancho Cucamonga, California to Ukiah, California.
The flight distance (direct flight from Rancho Cucamonga, CA to Ukiah, CA) is 467.11 mi.
524 mi = 843.63 kms