There are
1,086 mi
from Hereford, TX to Sycamore, IL
That's the driving distance. It would take 19 hours 23 mins to go from Hereford, Texas to Sycamore, Illinois.
The flight distance (direct flight from Hereford, TX to Sycamore, IL) is 890.93 mi.
1,086 mi = 1,748.48 kms