There are
1,128 mi
from Hereford, TX to Mchenry, IL
That's the driving distance. It would take 20 hours 22 mins to go from Hereford, Texas to Mchenry, Illinois.
The flight distance (direct flight from Hereford, TX to Mchenry, IL) is 921.37 mi.
1,128 mi = 1,814.53 kms