There are
2,050 mi
from Roseville, CA to Merrillville, IN
That's the driving distance. It would take 1 day 11 hours to go from Roseville, California to Merrillville, Indiana.
The flight distance (direct flight from Roseville, CA to Merrillville, IN) is 1,792.42 mi.
2,050 mi = 3.22 kms