The calculated distance (air line) between Al Mawşil al Jadīdah and Sīnah is approximately 33 miles respectively 53 kilometers.
By car or train, the actual journey to Sīnah is certainly longer, as only the direct route (as the crow flies) between Al Mawşil al Jadīdah and Sīnah has been calculated here.
Air line (approximately)
53 kilometers
29 nautical miles