Miles between San Marcos, CA and Northglenn, CO

There are
1,055 mi
from San Marcos, CA to Northglenn, CO

That's the driving distance. It would take 18 hours 33 mins to go from San Marcos, California to Northglenn, Colorado.

The flight distance (direct flight from San Marcos, CA to Northglenn, CO) is 820.64 mi.

1,055 mi = 1.61 kms