The calculated distance (air line) between Sidi Bel Abbes and Assi Bou Nif is approximately 35 miles respectively 57 kilometers.
By car or train, the actual journey to Assi Bou Nif is certainly longer, as only the direct route (as the crow flies) between Sidi Bel Abbes and Assi Bou Nif has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles