| Viterbo to Arico el Nuevo | 1,874.96 mi (3,017.45 km) |
| Viterbo to Armilla | 908.81 mi (1,462.59 km) |
| Viterbo to Arnedo | 724.97 mi (1,166.73 km) |
| Viterbo to Arona | 1,887.57 mi (3,037.75 km) |
| Viterbo to Arrecife | 1,703.14 mi (2,740.93 km) |
| Viterbo to Arrigorriaga | 760.71 mi (1,224.25 km) |
| Viterbo to Arroyomolinos | 842.08 mi (1,355.19 km) |
| Viterbo to Arteijo | 1,043.22 mi (1,678.90 km) |
| Viterbo to Arucas | 1,832.37 mi (2,948.91 km) |
| Viterbo to Aspe | 732.67 mi (1,179.13 km) |
| Viterbo to Astorga | 924.60 mi (1,488.01 km) |
| Viterbo to Atarfe | 909.97 mi (1,464.46 km) |
| Viterbo to Avila | 875.34 mi (1,408.72 km) |
| Viterbo to Aviles | 911.98 mi (1,467.68 km) |
| Viterbo to Ayamonte | 1,093.21 mi (1,759.35 km) |
