Miles between San Mateo, CA and Longmont, CO

There are
1,247 mi
from San Mateo, CA to Longmont, CO

That's the driving distance. It would take 21 hours 28 mins to go from San Mateo, California to Longmont, Colorado.

The flight distance (direct flight from San Mateo, CA to Longmont, CO) is 942.34 mi.

1,247 mi = 1.61 kms