The calculated distance (air line) between Al Qāhirah al Jadīdah and Sinnūris is approximately 56 miles respectively 89 kilometers.
By car or train, the actual journey to Sinnūris is certainly longer, as only the direct route (as the crow flies) between Al Qāhirah al Jadīdah and Sinnūris has been calculated here.
Air line (approximately)
89 kilometers
48 nautical miles