Miles between Great Falls, MT and Portland, TX

There are
1,839 mi
from Great Falls, MT to Portland, TX

That's the driving distance. It would take 1 day 8 hours to go from Great Falls, Montana to Portland, Texas.

The flight distance (direct flight from Great Falls, MT to Portland, TX) is 1,550.85 mi.

1,839 mi = 2,959.17 kms