There are
317 mi
from Evanston, IL to Ottumwa, IA
That's the driving distance. It would take 6 hours 16 mins to go from Evanston, Illinois to Ottumwa, Iowa.
The flight distance (direct flight from Evanston, IL to Ottumwa, IA) is 254.08 mi.
317 mi = 509.58 kms