There are
2,034 mi
from Irvine, CA to Merrillville, IN
That's the driving distance. It would take 1 day 11 hours to go from Irvine, California to Merrillville, Indiana.
The flight distance (direct flight from Irvine, CA to Merrillville, IN) is 1,742.32 mi.
2,034 mi = 3.22 kms