There are
780 mi
from Amarillo, TX to Altoona, IA
That's the driving distance. It would take 14 hours 4 mins to go from Amarillo, Texas to Altoona, Iowa.
The flight distance (direct flight from Amarillo, TX to Altoona, IA) is 633.35 mi.
780 mi = 1,255.64 kms