Miles between Boulder, CO and Rancho Santa Margarita, CA

There are
1,031 mi
from Boulder, CO to Rancho Santa Margarita, CA

That's the driving distance. It would take 18 hours 11 mins to go from Boulder, Colorado to Rancho Santa Margarita, California.

The flight distance (direct flight from Boulder, CO to Rancho Santa Margarita, CA) is 810.66 mi.

1,031 mi = 1.61 kms