There are
394 mi
from Rancho Cucamonga, CA to Hayward, CA
That's the driving distance. It would take 7 hours 18 mins to go from Rancho Cucamonga, California to Hayward, California.
The flight distance (direct flight from Rancho Cucamonga, CA to Hayward, CA) is 351.62 mi.
394 mi = 633.31 kms