| Formia to Arico el Nuevo | 1,920.20 mi (3,090.27 km) |
| Formia to Armilla | 963.57 mi (1,550.72 km) |
| Formia to Arnedo | 811.76 mi (1,306.40 km) |
| Formia to Arona | 1,932.92 mi (3,110.74 km) |
| Formia to Arrecife | 1,744.41 mi (2,807.35 km) |
| Formia to Arrigorriaga | 853.33 mi (1,373.31 km) |
| Formia to Arroyomolinos | 917.68 mi (1,476.86 km) |
| Formia to Arteijo | 1,136.43 mi (1,828.90 km) |
| Formia to Arucas | 1,875.33 mi (3,018.05 km) |
| Formia to Aspe | 788.75 mi (1,269.36 km) |
| Formia to Astorga | 1,013.73 mi (1,631.44 km) |
| Formia to Atarfe | 965.39 mi (1,553.64 km) |
| Formia to Avila | 954.05 mi (1,535.39 km) |
| Formia to Aviles | 1,006.11 mi (1,619.17 km) |
| Formia to Ayamonte | 1,156.18 mi (1,860.70 km) |
