There are
789 mi
from Shreveport, LA to Marshalltown, IA
That's the driving distance. It would take 14 hours 51 mins to go from Shreveport, Louisiana to Marshalltown, Iowa.
The flight distance (direct flight from Shreveport, LA to Marshalltown, IA) is 659.68 mi.
789 mi = 1,270.56 kms