There are
2,279 mi
from Simi Valley, CA to Chillicothe, OH
That's the driving distance. It would take 1 day 16 hours to go from Simi Valley, California to Chillicothe, Ohio.
The flight distance (direct flight from Simi Valley, CA to Chillicothe, OH) is 1,997.83 mi.
2,279 mi = 3.22 kms