The calculated distance (air line) between Mennzel Bou Zelfa and Hammamet is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Hammamet is certainly longer, as only the direct route (as the crow flies) between Mennzel Bou Zelfa and Hammamet has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles