The calculated distance (air line) between Gerasdorf bei Wien and Neu-Guntramsdorf is approximately 17 miles respectively 28 kilometers.
By car or train, the actual journey to Neu-Guntramsdorf is certainly longer, as only the direct route (as the crow flies) between Gerasdorf bei Wien and Neu-Guntramsdorf has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles