There are
1,155 mi
from Dayton, OH to Hereford, TX
That's the driving distance. It would take 20 hours 48 mins to go from Dayton, Ohio to Hereford, Texas.
The flight distance (direct flight from Dayton, OH to Hereford, TX) is 1,055.24 mi.
1,155 mi = 1.61 kms