| Portici to Amelia | 155.40 mi (250.10 km) |
| Portici to Anagni | 88.51 mi (142.44 km) |
| Portici to Ancona | 197.81 mi (318.35 km) |
| Portici to Andria | 105.74 mi (170.17 km) |
| Portici to Angri | 13.23 mi (21.29 km) |
| Portici to Anguillara Sabazia | 138.42 mi (222.77 km) |
| Portici to Anzio | 99.12 mi (159.51 km) |
| Portici to Anzola dell'Emilia | 303.02 mi (487.66 km) |
| Portici to Aosta | 489.66 mi (788.02 km) |
| Portici to Apricena | 86.58 mi (139.33 km) |
| Portici to Aprilia | 102.53 mi (165.00 km) |
| Portici to Aradeo | 204.85 mi (329.68 km) |
| Portici to Aragona | 239.30 mi (385.12 km) |
| Portici to Arco | 392.57 mi (631.78 km) |
| Portici to Arcola | 321.04 mi (516.66 km) |
