Miles between Longmont, CO and Santa Monica, CA

There are
1,058 mi
from Longmont, CO to Santa Monica, CA

That's the driving distance. It would take 18 hours 39 mins to go from Longmont, Colorado to Santa Monica, California.

The flight distance (direct flight from Longmont, CO to Santa Monica, CA) is 850.06 mi.

1,058 mi = 1.61 kms