There are
2,035 mi
from Simi Valley, CA to Richton Park, IL
That's the driving distance. It would take 1 day 11 hours to go from Simi Valley, California to Richton Park, Illinois.
The flight distance (direct flight from Simi Valley, CA to Richton Park, IL) is 1,756 mi.
2,035 mi = 3.22 kms