The calculated distance (air line) between Damietta and Al Maţarīyah is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Al Maţarīyah is certainly longer, as only the direct route (as the crow flies) between Damietta and Al Maţarīyah has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles