There are
2,011 mi
from Wheaton, IL to Simi Valley, CA
That's the driving distance. It would take 1 day 11 hours to go from Wheaton, Illinois to Simi Valley, California.
The flight distance (direct flight from Wheaton, IL to Simi Valley, CA) is 1,738.47 mi.
2,011 mi = 3,236.37 kms