Miles between Longmont, CO and Caldwell, ID

There are
817 mi
from Longmont, CO to Caldwell, ID

That's the driving distance. It would take 13 hours 40 mins to go from Longmont, Colorado to Caldwell, Idaho.

The flight distance (direct flight from Longmont, CO to Caldwell, ID) is 642.03 mi.

817 mi = 1,314.09 kms