The calculated distance (air line) between Mechraa Bel Ksiri and Ksar El Kebir is approximately 30 miles respectively 48 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 Mechraa Bel Ksiri and Ksar El Kebir has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles