| Portici to Amorebieta | 890.38 mi (1,432.92 km) |
| Portici to Amposta | 719.39 mi (1,157.74 km) |
| Portici to Amurrio | 902.93 mi (1,453.12 km) |
| Portici to Andoain | 854.38 mi (1,375.00 km) |
| Portici to Andraitx | 634.46 mi (1,021.06 km) |
| Portici to Andujar | 998.19 mi (1,606.43 km) |
| Portici to Antequera | 1,047.14 mi (1,685.21 km) |
| Portici to Antigua | 1,814.23 mi (2,919.72 km) |
| Portici to Aranda de Duero | 936.48 mi (1,507.12 km) |
| Portici to Aranjuez | 943.70 mi (1,518.73 km) |
| Portici to Archena | 853.66 mi (1,373.83 km) |
| Portici to Arcos de la Frontera | 1,117.83 mi (1,798.98 km) |
| Portici to Arenys de Mar | 614.73 mi (989.32 km) |
| Portici to Arenys de Munt | 615.29 mi (990.22 km) |
| Portici to Argentona | 622.35 mi (1,001.57 km) |
