There are
2,055 mi
from Simi Valley, CA to Merrillville, IN
That's the driving distance. It would take 1 day 12 hours to go from Simi Valley, California to Merrillville, Indiana.
The flight distance (direct flight from Simi Valley, CA to Merrillville, IN) is 1,775.06 mi.
2,055 mi = 3.22 kms