There are
1,012 mi
from Portland, OR to Rancho Santa Margarita, CA
That's the driving distance. It would take 19 hours 2 mins to go from Portland, Oregon to Rancho Santa Margarita, California.
The flight distance (direct flight from Portland, OR to Rancho Santa Margarita, CA) is 863.84 mi.
1,012 mi = 1.61 kms