There are
1,509 mi
from Pasco, WA to Amarillo, TX
That's the driving distance. It would take 1 day 2 hours to go from Pasco, Washington to Amarillo, Texas.
The flight distance (direct flight from Pasco, WA to Amarillo, TX) is 1,177.42 mi.
1,509 mi = 2,428.75 kms