There are
773 mi
from Killeen, TX to Sylacauga, AL
That's the driving distance. It would take 14 hours 24 mins to go from Killeen, Texas to Sylacauga, Alabama.
The flight distance (direct flight from Killeen, TX to Sylacauga, AL) is 685.85 mi.
773 mi = 1,243.94 kms