The calculated distance (air line) between Baden and Klagenfurt am Wörthersee is approximately 131 miles respectively 211 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 Baden and Klagenfurt am Wörthersee has been calculated here.
Air line (approximately)
211 kilometers
114 nautical miles