The calculated distance (air line) between Attnang-Puchheim and Hietzing is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Hietzing is certainly longer, as only the direct route (as the crow flies) between Attnang-Puchheim and Hietzing has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles