There are
2,390 mi
from Simi Valley, CA to Marietta, OH
That's the driving distance. It would take 1 day 18 hours to go from Simi Valley, California to Marietta, Ohio.
The flight distance (direct flight from Simi Valley, CA to Marietta, OH) is 2,079.22 mi.
2,390 mi = 3.22 kms