The calculated distance (air line) between Mostaganem and Aïn Defla is approximately 107 miles respectively 173 kilometers.
By car or train, the actual journey to Aïn Defla is certainly longer, as only the direct route (as the crow flies) between Mostaganem and Aïn Defla has been calculated here.
Air line (approximately)
173 kilometers
93 nautical miles