There are
267 mi
from Olathe, KS to Marshalltown, IA
That's the driving distance. It would take 5 hours 6 mins to go from Olathe, Kansas to Marshalltown, Iowa.
The flight distance (direct flight from Olathe, KS to Marshalltown, IA) is 240.83 mi.
267 mi = 429.45 kms