There are
2,140 mi
from Pittsburg, CA to Merrillville, IN
That's the driving distance. It would take 1 day 13 hours to go from Pittsburg, California to Merrillville, Indiana.
The flight distance (direct flight from Pittsburg, CA to Merrillville, IN) is 1,838.43 mi.
2,140 mi = 3,444.52 kms