The calculated distance (air line) between Damietta and Minyā al Qamḩ is approximately 68 miles respectively 110 kilometers.
By car or train, the actual journey to Minyā al Qamḩ is certainly longer, as only the direct route (as the crow flies) between Damietta and Minyā al Qamḩ has been calculated here.
Air line (approximately)
110 kilometers
59 nautical miles