There are
2,189 mi
from Simi Valley, CA to Fairfield, OH
That's the driving distance. It would take 1 day 14 hours to go from Simi Valley, California to Fairfield, Ohio.
The flight distance (direct flight from Simi Valley, CA to Fairfield, OH) is 1,913.51 mi.
2,189 mi = 3,523.49 kms