The calculated distance (air line) between Groß-Enzersdorf and Traiskirchen is approximately 18 miles respectively 28 kilometers.
By car or train, the actual journey to Traiskirchen is certainly longer, as only the direct route (as the crow flies) between Groß-Enzersdorf and Traiskirchen has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles