The calculated distance (air line) between Neuhofen an der Krems and Simmering is approximately 102 miles respectively 164 kilometers.
By car or train, the actual journey to Simmering is certainly longer, as only the direct route (as the crow flies) between Neuhofen an der Krems and Simmering has been calculated here.
Air line (approximately)
164 kilometers
88 nautical miles