The calculated distance (air line) between Batna City and Aïn Oussera is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Aïn Oussera is certainly longer, as only the direct route (as the crow flies) between Batna City and Aïn Oussera has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles