The calculated distance (air line) between Sidi Bel Abbes and Saïda is approximately 51 miles respectively 82 kilometers.
By car or train, the actual journey to Saïda is certainly longer, as only the direct route (as the crow flies) between Sidi Bel Abbes and Saïda has been calculated here.
Air line (approximately)
82 kilometers
44 nautical miles