The calculated distance (air line) between Bordj Bou Arreridj and El Khroub is approximately 109 miles respectively 175 kilometers.
By car or train, the actual journey to El Khroub is certainly longer, as only the direct route (as the crow flies) between Bordj Bou Arreridj and El Khroub has been calculated here.
Air line (approximately)
175 kilometers
94 nautical miles