The calculated distance (air line) between Sant'Angelo di Piove di Sacco and Mestre is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Mestre is certainly longer, as only the direct route (as the crow flies) between Sant'Angelo di Piove di Sacco and Mestre has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles