The calculated distance (air line) between Finkenstein am Faaker See and Hietzing is approximately 160 miles respectively 257 kilometers.
By car or train, the actual journey to Hietzing is certainly longer, as only the direct route (as the crow flies) between Finkenstein am Faaker See and Hietzing has been calculated here.
Air line (approximately)
257 kilometers
139 nautical miles