Miles between Meridian, ID and Great Falls, MT

There are
646 mi
from Meridian, ID to Great Falls, MT

That's the driving distance. It would take 10 hours 19 mins to go from Meridian, Idaho to Great Falls, Montana.

The flight distance (direct flight from Meridian, ID to Great Falls, MT) is 364.30 mi.

646 mi = 1,039.05 kms