There are
1,467 mi
from Great Falls, MT to Abilene, TX
That's the driving distance. It would take 1 day 1 hour to go from Great Falls, Montana to Abilene, Texas.
The flight distance (direct flight from Great Falls, MT to Abilene, TX) is 1,203.91 mi.
1,467 mi = 2,361.22 kms