The calculated distance (air line) between Salé Al Jadida and Sidi Slimane is approximately 50 miles respectively 81 kilometers.
By car or train, the actual journey to Sidi Slimane is certainly longer, as only the direct route (as the crow flies) between Salé Al Jadida and Sidi Slimane has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles