There are
1,925 mi
from Missoula, MT to Pasadena, TX
That's the driving distance. It would take 1 day 9 hours to go from Missoula, Montana to Pasadena, Texas.
The flight distance (direct flight from Missoula, MT to Pasadena, TX) is 1,556.36 mi.
1,925 mi = 1.61 kms