The calculated distance (air line) between Mehdia daira de meghila and M'Sila is approximately 157 miles respectively 253 kilometers.
By car or train, the actual journey to M'Sila is certainly longer, as only the direct route (as the crow flies) between Mehdia daira de meghila and M'Sila has been calculated here.
Air line (approximately)
253 kilometers
137 nautical miles