The calculated distance (air line) between Monte Porzio Catone and Genzano di Roma is approximately 8 miles respectively 12 kilometers.
By car or train, the actual journey to Genzano di Roma is certainly longer, as only the direct route (as the crow flies) between Monte Porzio Catone and Genzano di Roma has been calculated here.
Air line (approximately)
12 kilometers
7 nautical miles