The calculated distance (air line) between Sant'Angelo di Piove di Sacco and Livorno is approximately 148 miles respectively 238 kilometers.
By car or train, the actual journey to Livorno is certainly longer, as only the direct route (as the crow flies) between Sant'Angelo di Piove di Sacco and Livorno has been calculated here.
Air line (approximately)
238 kilometers
129 nautical miles