| Viterbo to Acqui Terme | 239.70 mi (385.76 km) |
| Viterbo to Acri | 300.78 mi (484.06 km) |
| Viterbo to Adelfia | 264.43 mi (425.57 km) |
| Viterbo to Adrano | 358.60 mi (577.12 km) |
| Viterbo to Adria | 181.83 mi (292.63 km) |
| Viterbo to Afragola | 154.29 mi (248.31 km) |
| Viterbo to Agliana | 116.50 mi (187.49 km) |
| Viterbo to Agrate Brianza | 257.93 mi (415.10 km) |
| Viterbo to Agrigento | 361.11 mi (581.15 km) |
| Viterbo to Agropoli | 206.63 mi (332.53 km) |
| Viterbo to Ala | 236.60 mi (380.78 km) |
| Viterbo to Alassio | 226.36 mi (364.30 km) |
| Viterbo to Alatri | 79.53 mi (127.99 km) |
| Viterbo to Alba | 257.61 mi (414.59 km) |
| Viterbo to Albano Laziale | 55.44 mi (89.23 km) |
