There are
420 mi
from Rancho Cucamonga, CA to Hercules, CA
That's the driving distance. It would take 7 hours 48 mins to go from Rancho Cucamonga, California to Hercules, California.
The flight distance (direct flight from Rancho Cucamonga, CA to Hercules, CA) is 376.46 mi.
420 mi = 675.57 kms