The calculated distance (air line) between Şān al Ḩajar al Qiblīyah and Damietta is approximately 31 miles respectively 49 kilometers.
By car or train, the actual journey to Damietta is certainly longer, as only the direct route (as the crow flies) between Şān al Ḩajar al Qiblīyah and Damietta has been calculated here.
Air line (approximately)
49 kilometers
27 nautical miles