Miles between Thornton, CO and Great Falls, MT

There are
761 mi
from Thornton, CO to Great Falls, MT

That's the driving distance. It would take 13 hours 5 mins to go from Thornton, Colorado to Great Falls, Montana.

The flight distance (direct flight from Thornton, CO to Great Falls, MT) is 614.40 mi.

761 mi = 1,225.25 kms