There are
391 mi
from Rancho Cucamonga, CA to Fremont, CA
That's the driving distance. It would take 7 hours 23 mins to go from Rancho Cucamonga, California to Fremont, California.
The flight distance (direct flight from Rancho Cucamonga, CA to Fremont, CA) is 342.26 mi.
391 mi = 629.73 kms