The calculated distance (air line) between Strasshof an der Nordbahn and Klagenfurt am Wörthersee is approximately 161 miles respectively 259 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 Strasshof an der Nordbahn and Klagenfurt am Wörthersee has been calculated here.
Air line (approximately)
259 kilometers
140 nautical miles