There are
428 mi
from Rancho Cucamonga, CA to Larkspur, CA
That's the driving distance. It would take 8 hours 2 mins to go from Rancho Cucamonga, California to Larkspur, California.
The flight distance (direct flight from Rancho Cucamonga, CA to Larkspur, CA) is 382.27 mi.
428 mi = 688.68 kms