The calculated distance (air line) between Bordj Bou Arreridj and Birkhadem is approximately 105 miles respectively 169 kilometers.
By car or train, the actual journey to Birkhadem is certainly longer, as only the direct route (as the crow flies) between Bordj Bou Arreridj and Birkhadem has been calculated here.
Air line (approximately)
169 kilometers
91 nautical miles