There are
1,075 mi
from Hereford, TX to Lemont, IL
That's the driving distance. It would take 19 hours 10 mins to go from Hereford, Texas to Lemont, Illinois.
The flight distance (direct flight from Hereford, TX to Lemont, IL) is 911.88 mi.
1,075 mi = 1,730.44 kms