There are
968 mi
from Beaumont, TX to Marshalltown, IA
That's the driving distance. It would take 18 hours 14 mins to go from Beaumont, Texas to Marshalltown, Iowa.
The flight distance (direct flight from Beaumont, TX to Marshalltown, IA) is 829.77 mi.
968 mi = 1,557.28 kms