The calculated distance (air line) between Al Qāhirah al Jadīdah and Arīsh is approximately 159 miles respectively 256 kilometers.
By car or train, the actual journey to Arīsh is certainly longer, as only the direct route (as the crow flies) between Al Qāhirah al Jadīdah and Arīsh has been calculated here.
Air line (approximately)
256 kilometers
138 nautical miles