| Viterbo to San Vendemiano | 240.23 mi (386.61 km) |
| Viterbo to San Vito al Tagliamento | 243.49 mi (391.86 km) |
| Viterbo to San Vito dei Normanni | 314.08 mi (505.47 km) |
| Viterbo to Sannicandro di Bari | 261.24 mi (420.43 km) |
| Viterbo to Sannicandro Garganico | 181.97 mi (292.85 km) |
| Viterbo to Sansepolcro | 79.97 mi (128.69 km) |
| Viterbo to Sant'Agata de' Goti | 153.78 mi (247.49 km) |
| Viterbo to Sant'Agata di Militello | 328.82 mi (529.18 km) |
| Viterbo to Sant'Agnello | 171.40 mi (275.83 km) |
| Viterbo to Sant'Ambrogio di Valpolicella | 223.42 mi (359.56 km) |
| Viterbo to Sant'Anastasia | 159.83 mi (257.22 km) |
| Viterbo to Sant'Angelo Lodigiano | 236.63 mi (380.82 km) |
| Viterbo to Sant'Antimo | 149.97 mi (241.35 km) |
| Viterbo to Sant'Antioco | 300.18 mi (483.10 km) |
| Viterbo to Sant'Antonio Abate | 171.86 mi (276.58 km) |
