There are
1,668 mi
from Kalispell, MT to Troy, MO
That's the driving distance. It would take 1 day 5 hours to go from Kalispell, Montana to Troy, Missouri.
The flight distance (direct flight from Kalispell, MT to Troy, MO) is 1,322.71 mi.
1,668 mi = 2,684.46 kms