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