The calculated distance (air line) between Al Mughrāqah and Rafaḩ is approximately 15 miles respectively 25 kilometers.
By car or train, the actual journey to Rafaḩ is certainly longer, as only the direct route (as the crow flies) between Al Mughrāqah and Rafaḩ has been calculated here.
Air line (approximately)
25 kilometers
13 nautical miles