The calculated distance (air line) between Dayr Mawās and Ras Gharib is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Ras Gharib is certainly longer, as only the direct route (as the crow flies) between Dayr Mawās and Ras Gharib has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles