There are
1,580 mi
from Overland Park, KS to Simi Valley, CA
That's the driving distance. It would take 1 day 4 hours to go from Overland Park, Kansas to Simi Valley, California.
The flight distance (direct flight from Overland Park, KS to Simi Valley, CA) is 1,371.59 mi.
1,580 mi = 2,543.05 kms