The calculated distance (air line) between Micheldorf in Oberösterreich and Hietzing is approximately 102 miles respectively 164 kilometers.
By car or train, the actual journey to Hietzing is certainly longer, as only the direct route (as the crow flies) between Micheldorf in Oberösterreich and Hietzing has been calculated here.
Air line (approximately)
164 kilometers
89 nautical miles