The calculated distance (air line) between Al ‘Ubaydīyah and Rafaḩ is approximately 68 miles respectively 110 kilometers.
By car or train, the actual journey to Rafaḩ is certainly longer, as only the direct route (as the crow flies) between Al ‘Ubaydīyah and Rafaḩ has been calculated here.
Air line (approximately)
110 kilometers
59 nautical miles