The calculated distance (air line) between Damietta and Madīnat as Sādāt is approximately 106 miles respectively 171 kilometers.
By car or train, the actual journey to Madīnat as Sādāt is certainly longer, as only the direct route (as the crow flies) between Damietta and Madīnat as Sādāt has been calculated here.
Air line (approximately)
171 kilometers
92 nautical miles