There are
1,537 mi
from Houston, TX to Rancho Santa Margarita, CA
That's the driving distance. It would take 1 day 2 hours to go from Houston, Texas to Rancho Santa Margarita, California.
The flight distance (direct flight from Houston, TX to Rancho Santa Margarita, CA) is 1,331.45 mi.
1,537 mi = 1.61 kms