The calculated distance (air line) between Al Qāhirah al Jadīdah and Hihyā is approximately 44 miles respectively 71 kilometers.
By car or train, the actual journey to Hihyā is certainly longer, as only the direct route (as the crow flies) between Al Qāhirah al Jadīdah and Hihyā has been calculated here.
Air line (approximately)
71 kilometers
38 nautical miles