The calculated distance (air line) between Jannātah and An Nuşayrāt is approximately 51 miles respectively 82 kilometers.
By car or train, the actual journey to An Nuşayrāt is certainly longer, as only the direct route (as the crow flies) between Jannātah and An Nuşayrāt has been calculated here.
Air line (approximately)
82 kilometers
44 nautical miles