There are
2,560 mi
from Kalispell, MT to Concord, NH
That's the driving distance. It would take 1 day 23 hours to go from Kalispell, Montana to Concord, New Hampshire.
The flight distance (direct flight from Kalispell, MT to Concord, NH) is 2,065.24 mi.
2,560 mi = 4,119.88 kms