Miles between Longmont, CO and Helena, MT

There are
768 mi
from Longmont, CO to Helena, MT

That's the driving distance. It would take 12 hours 52 mins to go from Longmont, Colorado to Helena, Montana.

The flight distance (direct flight from Longmont, CO to Helena, MT) is 563.63 mi.

768 mi = 1,235.86 kms