There are
1,041 mi
from Killeen, TX to Seymour, IN
That's the driving distance. It would take 18 hours 29 mins to go from Killeen, Texas to Seymour, Indiana.
The flight distance (direct flight from Killeen, TX to Seymour, IN) is 860.10 mi.
1,041 mi = 1.61 kms