There are
7 mi
from Lake Forest, CA to Rancho Santa Margarita, CA
That's the driving distance. It would take 10 minutes to go from Lake Forest, California to Rancho Santa Margarita, California.
The flight distance (direct flight from Lake Forest, CA to Rancho Santa Margarita, CA) is 4.96 mi.
7 mi = 10.86 kms