The calculated distance (air line) between Zagazig and Al Qāhirah al Jadīdah is approximately 38 miles respectively 61 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 Zagazig and Al Qāhirah al Jadīdah has been calculated here.
Air line (approximately)
61 kilometers
33 nautical miles