Miles between Amarillo, TX and Thornton, CO

There are
423 mi
from Amarillo, TX to Thornton, CO

That's the driving distance. It would take 8 hours 1 min to go from Amarillo, Texas to Thornton, Colorado.

The flight distance (direct flight from Amarillo, TX to Thornton, CO) is 364.15 mi.

423 mi = 680.17 kms