The calculated distance (air line) between Traiskirchen and Hainburg an der Donau is approximately 31 miles respectively 51 kilometers.
By car or train, the actual journey to Hainburg an der Donau is certainly longer, as only the direct route (as the crow flies) between Traiskirchen and Hainburg an der Donau has been calculated here.
Air line (approximately)
51 kilometers
27 nautical miles