There are
1,055 mi
from Amarillo, TX to Merrillville, IN
That's the driving distance. It would take 19 hours 4 mins to go from Amarillo, Texas to Merrillville, Indiana.
The flight distance (direct flight from Amarillo, TX to Merrillville, IN) is 895.10 mi.
1,055 mi = 1,698.55 kms