There are
1,095 mi
from Johnson City, TN to Harker Heights, TX
That's the driving distance. It would take 19 hours 27 mins to go from Johnson City, Tennessee to Harker Heights, Texas.
The flight distance (direct flight from Johnson City, TN to Harker Heights, TX) is 949.76 mi.
1,095 mi = 1,762.76 kms