There are
2,042 mi
from Missoula, MT to Monroeville, PA
That's the driving distance. It would take 1 day 11 hours to go from Missoula, Montana to Monroeville, Pennsylvania.
The flight distance (direct flight from Missoula, MT to Monroeville, PA) is 1,753.32 mi.
2,042 mi = 3.22 kms