Miles between Great Falls, MT and Thornton, CO

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

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

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

762 mi = 1,225.75 kms