There are
2,210 mi
from Roswell, GA to Simi Valley, CA
That's the driving distance. It would take 1 day 14 hours to go from Roswell, Georgia to Simi Valley, California.
The flight distance (direct flight from Roswell, GA to Simi Valley, CA) is 1,958.70 mi.
2,210 mi = 3,556.98 kms