The calculated distance (air line) between Naples and Pomigliano d'Arco is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to Pomigliano d'Arco is certainly longer, as only the direct route (as the crow flies) between Naples and Pomigliano d'Arco has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles