Miles between Great Falls, MT and Troy, OH

There are
1,645 mi
from Great Falls, MT to Troy, OH

That's the driving distance. It would take 1 day 6 hours to go from Great Falls, Montana to Troy, Ohio.

The flight distance (direct flight from Great Falls, MT to Troy, OH) is 1,437.89 mi.

1,645 mi = 2,647.93 kms