There are
2,556 mi
from Lakeland, FL to Simi Valley, CA
That's the driving distance. It would take 1 day 21 hours to go from Lakeland, Florida to Simi Valley, California.
The flight distance (direct flight from Lakeland, FL to Simi Valley, CA) is 2,207.53 mi.
2,556 mi = 3.22 kms