There are
1,995 mi
from Simi Valley, CA to Yorkville, IL
That's the driving distance. It would take 1 day 11 hours to go from Simi Valley, California to Yorkville, Illinois.
The flight distance (direct flight from Simi Valley, CA to Yorkville, IL) is 1,719.09 mi.
1,995 mi = 1.61 kms