There are
892 mi
from Pasadena, TX to Hannibal, MO
That's the driving distance. It would take 16 hours 41 mins to go from Pasadena, Texas to Hannibal, Missouri.
The flight distance (direct flight from Pasadena, TX to Hannibal, MO) is 725.66 mi.
892 mi = 1,435.87 kms