The calculated distance (air line) between Sour el Ghozlane and M'Sila is approximately 56 miles respectively 90 kilometers.
By car or train, the actual journey to M'Sila is certainly longer, as only the direct route (as the crow flies) between Sour el Ghozlane and M'Sila has been calculated here.
Air line (approximately)
90 kilometers
49 nautical miles