The calculated distance (air line) between Finkenstein am Faaker See and Klagenfurt am Wörthersee is approximately 21 miles respectively 34 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 Finkenstein am Faaker See and Klagenfurt am Wörthersee has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles