There are
443 mi
from Rancho Cucamonga, CA to Sonoma, CA
That's the driving distance. It would take 8 hours 18 mins to go from Rancho Cucamonga, California to Sonoma, California.
The flight distance (direct flight from Rancho Cucamonga, CA to Sonoma, CA) is 396.37 mi.
443 mi = 713.66 kms