There are
2,659 mi
from Kalispell, MT to St Augustine, FL
That's the driving distance. It would take 1 day 23 hours to go from Kalispell, Montana to St Augustine, Florida.
The flight distance (direct flight from Kalispell, MT to St Augustine, FL) is 2,149.63 mi.
2,659 mi = 4,279.07 kms