There are
926 mi
from Waterloo, IA to Hereford, TX
That's the driving distance. It would take 17 hours 6 mins to go from Waterloo, Iowa to Hereford, Texas.
The flight distance (direct flight from Waterloo, IA to Hereford, TX) is 757.74 mi.
926 mi = 1,490.39 kms