The calculated distance (air line) between Sīdī Sālim and Arīsh is approximately 178 miles respectively 287 kilometers.
By car or train, the actual journey to Arīsh is certainly longer, as only the direct route (as the crow flies) between Sīdī Sālim and Arīsh has been calculated here.
Air line (approximately)
287 kilometers
155 nautical miles