| Portici to Arico el Nuevo | 1,946.79 mi (3,133.06 km) |
| Portici to Armilla | 995.24 mi (1,601.68 km) |
| Portici to Arnedo | 854.66 mi (1,375.45 km) |
| Portici to Arona | 1,959.54 mi (3,153.57 km) |
| Portici to Arrecife | 1,769.58 mi (2,847.87 km) |
| Portici to Arrigorriaga | 897.93 mi (1,445.08 km) |
| Portici to Arroyomolinos | 956.78 mi (1,539.80 km) |
| Portici to Arteijo | 1,180.96 mi (1,900.57 km) |
| Portici to Arucas | 1,901.04 mi (3,059.44 km) |
| Portici to Aspe | 821.46 mi (1,322.01 km) |
| Portici to Astorga | 1,057.10 mi (1,701.24 km) |
| Portici to Atarfe | 997.29 mi (1,604.98 km) |
| Portici to Avila | 994.12 mi (1,599.89 km) |
| Portici to Aviles | 1,051.01 mi (1,691.44 km) |
| Portici to Ayamonte | 1,190.43 mi (1,915.81 km) |
