There are
1,965 mi
from Peoria, IL to Simi Valley, CA
That's the driving distance. It would take 1 day 10 hours to go from Peoria, Illinois to Simi Valley, California.
The flight distance (direct flight from Peoria, IL to Simi Valley, CA) is 1,652.46 mi.
1,965 mi = 1.61 kms