There are
78 mi
from Rancho Cucamonga, CA to Simi Valley, CA
That's the driving distance. It would take 1 hour 33 mins to go from Rancho Cucamonga, California to Simi Valley, California.
The flight distance (direct flight from Rancho Cucamonga, CA to Simi Valley, CA) is 68.83 mi.
78 mi = 124.95 kms