Miles between Longmont, CO and Montclair, CA

There are
1,010 mi
from Longmont, CO to Montclair, CA

That's the driving distance. It would take 17 hours 42 mins to go from Longmont, Colorado to Montclair, California.

The flight distance (direct flight from Longmont, CO to Montclair, CA) is 809.96 mi.

1,010 mi = 1.61 kms