There are
1,430 mi
from Dallas, TX to Rancho Santa Margarita, CA
That's the driving distance. It would take 1 day to go from Dallas, Texas to Rancho Santa Margarita, California.
The flight distance (direct flight from Dallas, TX to Rancho Santa Margarita, CA) is 1,203.52 mi.
1,430 mi = 1.61 kms