| Sluis to Setubal | 1,065.11 mi (1,714.12 km) |
| Sluis to Sever do Vouga | 920.56 mi (1,481.50 km) |
| Sluis to Silves | 1,134.56 mi (1,825.90 km) |
| Sluis to Sines | 1,098.61 mi (1,768.05 km) |
| Sluis to Sintra | 1,062.44 mi (1,709.82 km) |
| Sluis to Sobrado de Paiva | 900.43 mi (1,449.10 km) |
| Sluis to Sobral de Monte Agraco | 1,042.91 mi (1,678.40 km) |
| Sluis to Soure | 967.79 mi (1,557.50 km) |
| Sluis to Tabua | 932.64 mi (1,500.93 km) |
| Sluis to Tavira | 1,119.75 mi (1,802.06 km) |
| Sluis to Tomar | 988.13 mi (1,590.24 km) |
| Sluis to Tondela | 925.01 mi (1,488.67 km) |
| Sluis to Torre de Moncorvo | 858.59 mi (1,381.77 km) |
| Sluis to Torres Novas | 999.23 mi (1,608.10 km) |
| Sluis to Torres Vedras | 1,042.29 mi (1,677.41 km) |
