Miles between San Marcos, CA and Castle Rock, CO

There are
1,073 mi
from San Marcos, CA to Castle Rock, CO

That's the driving distance. It would take 18 hours 52 mins to go from San Marcos, California to Castle Rock, Colorado.

The flight distance (direct flight from San Marcos, CA to Castle Rock, CO) is 808.55 mi.

1,073 mi = 1.61 kms