The calculated distance (air line) between Beni Mellal and Ksar El Kebir is approximately 186 miles respectively 299 kilometers.
By car or train, the actual journey to Ksar El Kebir is certainly longer, as only the direct route (as the crow flies) between Beni Mellal and Ksar El Kebir has been calculated here.
Air line (approximately)
299 kilometers
161 nautical miles