There are
936 mi
from Wichita Falls, TX to Merrillville, IN
That's the driving distance. It would take 17 hours 6 mins to go from Wichita Falls, Texas to Merrillville, Indiana.
The flight distance (direct flight from Wichita Falls, TX to Merrillville, IN) is 802.39 mi.
936 mi = 1,506.83 kms