There are
1,709 mi
from Hereford, TX to Cornelius, OR
That's the driving distance. It would take 1 day 5 hours to go from Hereford, Texas to Cornelius, Oregon.
The flight distance (direct flight from Hereford, TX to Cornelius, OR) is 1,311.82 mi.
1,709 mi = 2,750.52 kms