How many miles Amarillo Texas to l paso Texas?

551 miles taking this route:

1. Take I-40 WEST from Amarillo to I-25 SOUTH to LAS CRUCES off EXIT 159B in Albuquerque, New Mexico.
2. Take I-25 SOUTH to I-10 EAST to El Paso at END I-25 in Las Cruces.
3. Take I-10 EAST to El Paso.