There are
2,003 mi
from Simi Valley, CA to Oswego, IL
That's the driving distance. It would take 1 day 11 hours to go from Simi Valley, California to Oswego, Illinois.
The flight distance (direct flight from Simi Valley, CA to Oswego, IL) is 1,724.35 mi.
2,003 mi = 3.22 kms