There are
876 mi
from Chattanooga, TN to Harker Heights, TX
That's the driving distance. It would take 16 hours 5 mins to go from Chattanooga, Tennessee to Harker Heights, Texas.
The flight distance (direct flight from Chattanooga, TN to Harker Heights, TX) is 765.03 mi.
876 mi = 1,409.86 kms