The calculated distance (air line) between Deuchendorf and Klagenfurt am Wörthersee is approximately 75 miles respectively 121 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 Deuchendorf and Klagenfurt am Wörthersee has been calculated here.
Air line (approximately)
121 kilometers
65 nautical miles