| Sinaia to Sesimbra | 1,829.37 mi (2,944.08 km) |
| Sinaia to Setubal | 1,816.86 mi (2,923.96 km) |
| Sinaia to Sever do Vouga | 1,728.92 mi (2,782.43 km) |
| Sinaia to Silves | 1,837.45 mi (2,957.09 km) |
| Sinaia to Sines | 1,833.19 mi (2,950.23 km) |
| Sinaia to Sintra | 1,832.61 mi (2,949.29 km) |
| Sinaia to Sobrado de Paiva | 1,716.40 mi (2,762.28 km) |
| Sinaia to Sobral de Monte Agraco | 1,814.63 mi (2,920.37 km) |
| Sinaia to Soure | 1,760.08 mi (2,832.57 km) |
| Sinaia to Tabua | 1,722.35 mi (2,771.85 km) |
| Sinaia to Tavira | 1,801.70 mi (2,899.56 km) |
| Sinaia to Tomar | 1,762.10 mi (2,835.82 km) |
| Sinaia to Tondela | 1,720.82 mi (2,769.40 km) |
| Sinaia to Torre de Moncorvo | 1,657.23 mi (2,667.06 km) |
| Sinaia to Torres Novas | 1,771.56 mi (2,851.04 km) |
