There are
2,047 mi
from Simi Valley, CA to Griffith, IN
That's the driving distance. It would take 1 day 12 hours to go from Simi Valley, California to Griffith, Indiana.
The flight distance (direct flight from Simi Valley, CA to Griffith, IN) is 1,770.72 mi.
2,047 mi = 3.22 kms