The calculated distance (air line) between Al Mawşil al Jadīdah and Nusaybin is approximately 116 miles respectively 187 kilometers.
By car or train, the actual journey to Nusaybin is certainly longer, as only the direct route (as the crow flies) between Al Mawşil al Jadīdah and Nusaybin has been calculated here.
Air line (approximately)
187 kilometers
101 nautical miles