There are
1,864 mi
from Simi Valley, CA to Swansea, IL
That's the driving distance. It would take 1 day 9 hours to go from Simi Valley, California to Swansea, Illinois.
The flight distance (direct flight from Simi Valley, CA to Swansea, IL) is 1,621.17 mi.
1,864 mi = 1.61 kms