There are
1,320 mi
from Parma, OH to Harker Heights, TX
That's the driving distance. It would take 23 hours 48 mins to go from Parma, Ohio to Harker Heights, Texas.
The flight distance (direct flight from Parma, OH to Harker Heights, TX) is 1,135.71 mi.
1,320 mi = 1.61 kms