The calculated distance (air line) between Traiskirchen and Klagenfurt am Wörthersee is approximately 134 miles respectively 215 kilometers.
By car or train, the actual journey to Klagenfurt am Wörthersee is certainly longer, as only the direct route (as the crow flies) between Traiskirchen and Klagenfurt am Wörthersee has been calculated here.
Air line (approximately)
215 kilometers
116 nautical miles