There are
1,646 mi
from Missoula, MT to North Richland Hills, TX
That's the driving distance. It would take 1 day 4 hours to go from Missoula, Montana to North Richland Hills, Texas.
The flight distance (direct flight from Missoula, MT to North Richland Hills, TX) is 1,310.70 mi.
1,646 mi = 1.61 kms