The calculated distance (air line) between An Nuşayrāt and Rafaḩ is approximately 14 miles respectively 22 kilometers.
By car or train, the actual journey to Rafaḩ is certainly longer, as only the direct route (as the crow flies) between An Nuşayrāt and Rafaḩ has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles