| Viterbo to Setubal | 1,132.74 mi (1,822.97 km) |
| Viterbo to Sever do Vouga | 1,061.86 mi (1,708.90 km) |
| Viterbo to Silves | 1,145.40 mi (1,843.35 km) |
| Viterbo to Sines | 1,145.62 mi (1,843.70 km) |
| Viterbo to Sintra | 1,151.42 mi (1,853.03 km) |
| Viterbo to Sobrado de Paiva | 1,052.27 mi (1,693.47 km) |
| Viterbo to Sobral de Monte Agraco | 1,134.47 mi (1,825.75 km) |
| Viterbo to Soure | 1,087.07 mi (1,749.48 km) |
| Viterbo to Tabua | 1,050.76 mi (1,691.03 km) |
| Viterbo to Tavira | 1,108.12 mi (1,783.34 km) |
| Viterbo to Tomar | 1,084.71 mi (1,745.68 km) |
| Viterbo to Tondela | 1,050.88 mi (1,691.23 km) |
| Viterbo to Torre de Moncorvo | 992.17 mi (1,596.74 km) |
| Viterbo to Torres Novas | 1,093.37 mi (1,759.61 km) |
| Viterbo to Torres Vedras | 1,138.86 mi (1,832.82 km) |
