Miles between San Marcos, CA and Montrose, CO

There are
865 mi
from San Marcos, CA to Montrose, CO

That's the driving distance. It would take 15 hours 13 mins to go from San Marcos, California to Montrose, Colorado.

The flight distance (direct flight from San Marcos, CA to Montrose, CO) is 637.27 mi.

865 mi = 1,391.42 kms