There are
1,540 mi
from Pasco, WA to Hereford, TX
That's the driving distance. It would take 1 day 2 hours to go from Pasco, Washington to Hereford, Texas.
The flight distance (direct flight from Pasco, WA to Hereford, TX) is 1,175.63 mi.
1,540 mi = 2,478.75 kms