There are
2,675 mi
from Reading, PA to Rancho Santa Margarita, CA
That's the driving distance. It would take 1 day 23 hours to go from Reading, Pennsylvania to Rancho Santa Margarita, California.
The flight distance (direct flight from Reading, PA to Rancho Santa Margarita, CA) is 2,324.03 mi.
2,675 mi = 3.22 kms