There are
939 mi
from Amarillo, TX to Bismarck, ND
That's the driving distance. It would take 17 hours 58 mins to go from Amarillo, Texas to Bismarck, North Dakota.
The flight distance (direct flight from Amarillo, TX to Bismarck, ND) is 802.37 mi.
939 mi = 1,511.25 kms