There are
1,048 mi
from Amarillo, TX to Glendora, CA
That's the driving distance. It would take 18 hours 1 min to go from Amarillo, Texas to Glendora, California.
The flight distance (direct flight from Amarillo, TX to Glendora, CA) is 913.12 mi.
1,048 mi = 1,687.09 kms