The calculated distance (air line) between Djelfa and Bordj Bou Arreridj is approximately 128 miles respectively 207 kilometers.
By car or train, the actual journey to Bordj Bou Arreridj is certainly longer, as only the direct route (as the crow flies) between Djelfa and Bordj Bou Arreridj has been calculated here.
Air line (approximately)
207 kilometers
112 nautical miles