The calculated distance (air line) between Oran and Sidi ech Chahmi is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Sidi ech Chahmi is certainly longer, as only the direct route (as the crow flies) between Oran and Sidi ech Chahmi has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles