The calculated distance (air line) between Miliana and Sidi Bel Abbes is approximately 178 miles respectively 286 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 Miliana and Sidi Bel Abbes has been calculated here.
Air line (approximately)
286 kilometers
154 nautical miles