There are
2,154 mi
from Chattanooga, TN to Simi Valley, CA
That's the driving distance. It would take 1 day 13 hours to go from Chattanooga, Tennessee to Simi Valley, California.
The flight distance (direct flight from Chattanooga, TN to Simi Valley, CA) is 1,894.08 mi.
2,154 mi = 3.22 kms