There are
391 mi
from Fremont, CA to Rancho Cucamonga, CA
That's the driving distance. It would take 7 hours 23 mins to go from Fremont, California to Rancho Cucamonga, California.
The flight distance (direct flight from Fremont, CA to Rancho Cucamonga, CA) is 342.26 mi.
391 mi = 629.62 kms