There are
1,924 mi
from Pasadena, TX to Missoula, MT
That's the driving distance. It would take 1 day 9 hours to go from Pasadena, Texas to Missoula, Montana.
The flight distance (direct flight from Pasadena, TX to Missoula, MT) is 1,556.36 mi.
1,924 mi = 1.61 kms