The calculated distance (air line) between Giza and Al Qāhirah al Jadīdah is approximately 14 miles respectively 23 kilometers.
By car or train, the actual journey to Al Qāhirah al Jadīdah is certainly longer, as only the direct route (as the crow flies) between Giza and Al Qāhirah al Jadīdah has been calculated here.
Air line (approximately)
23 kilometers
12 nautical miles