The calculated distance (air line) between Yūsuf aṣ-Ṣiddīq and Damietta is approximately 164 miles respectively 264 kilometers.
By car or train, the actual journey to Damietta is certainly longer, as only the direct route (as the crow flies) between Yūsuf aṣ-Ṣiddīq and Damietta has been calculated here.
Air line (approximately)
264 kilometers
142 nautical miles