There are
864 mi
from Missoula, MT to Mesquite, NV
That's the driving distance. It would take 14 hours 7 mins to go from Missoula, Montana to Mesquite, Nevada.
The flight distance (direct flight from Missoula, MT to Mesquite, NV) is 694.74 mi.
864 mi = 1,390.49 kms