There are
333 mi
from Champaign, IL to Marshalltown, IA
That's the driving distance. It would take 6 hours 13 mins to go from Champaign, Illinois to Marshalltown, Iowa.
The flight distance (direct flight from Champaign, IL to Marshalltown, IA) is 277.17 mi.
333 mi = 536.52 kms