The calculated distance (air line) between Bordj Bou Arreridj and El Eulma is approximately 52 miles respectively 84 kilometers.
By car or train, the actual journey to El Eulma is certainly longer, as only the direct route (as the crow flies) between Bordj Bou Arreridj and El Eulma has been calculated here.
Air line (approximately)
84 kilometers
45 nautical miles