There are
1,719 mi
from Tucson, AZ to Merrillville, IN
That's the driving distance. It would take 1 day 7 hours to go from Tucson, Arizona to Merrillville, Indiana.
The flight distance (direct flight from Tucson, AZ to Merrillville, IN) is 1,446.45 mi.
1,719 mi = 1.61 kms