The calculated distance (air line) between Armavir and Doğubayazıt is approximately 42 miles respectively 68 kilometers.
By car or train, the actual journey to Doğubayazıt is certainly longer, as only the direct route (as the crow flies) between Armavir and Doğubayazıt has been calculated here.
Air line (approximately)
68 kilometers
37 nautical miles