| Viterbo to Selargius | 267.35 mi (430.25 km) |
| Viterbo to Selvazzano Dentro | 205.46 mi (330.66 km) |
| Viterbo to Senago | 263.80 mi (424.55 km) |
| Viterbo to Senigallia | 105.65 mi (170.03 km) |
| Viterbo to Seravezza | 144.27 mi (232.18 km) |
| Viterbo to Seregno | 265.78 mi (427.72 km) |
| Viterbo to Seriate | 254.86 mi (410.16 km) |
| Viterbo to Sermoneta | 75.10 mi (120.86 km) |
| Viterbo to Serramanna | 265.38 mi (427.09 km) |
| Viterbo to Serravalle Pistoiese | 120.74 mi (194.31 km) |
| Viterbo to Sessa Aurunca | 124.80 mi (200.84 km) |
| Viterbo to Sesto Calende | 286.53 mi (461.12 km) |
| Viterbo to Sesto Fiorentino | 107.86 mi (173.58 km) |
| Viterbo to Sesto San Giovanni | 258.20 mi (415.54 km) |
| Viterbo to Sestri Levante | 187.00 mi (300.95 km) |
