The calculated distance (air line) between Sīdī Ghāzī and Damietta is approximately 47 miles respectively 76 kilometers.
By car or train, the actual journey to Damietta is certainly longer, as only the direct route (as the crow flies) between Sīdī Ghāzī and Damietta has been calculated here.
Air line (approximately)
76 kilometers
41 nautical miles