There are
1,790 mi
from Simi Valley, CA to Ottumwa, IA
That's the driving distance. It would take 1 day 7 hours to go from Simi Valley, California to Ottumwa, Iowa.
The flight distance (direct flight from Simi Valley, CA to Ottumwa, IA) is 1,509.50 mi.
1,790 mi = 1.61 kms