The calculated distance (air line) between Sidi Mérouane and M'Sila is approximately 111 miles respectively 179 kilometers.
By car or train, the actual journey to M'Sila is certainly longer, as only the direct route (as the crow flies) between Sidi Mérouane and M'Sila has been calculated here.
Air line (approximately)
179 kilometers
97 nautical miles