| South Valley to Sesimbra | 5,127.65 mi (8,252.16 km) |
| South Valley to Setubal | 5,134.10 mi (8,262.54 km) |
| South Valley to Sever do Vouga | 5,075.90 mi (8,168.87 km) |
| South Valley to Silves | 5,204.98 mi (8,376.61 km) |
| South Valley to Sines | 5,156.61 mi (8,298.76 km) |
| South Valley to Sintra | 5,101.34 mi (8,209.82 km) |
| South Valley to Sobrado de Paiva | 5,069.25 mi (8,158.17 km) |
| South Valley to Sobral de Monte Agraco | 5,104.01 mi (8,214.12 km) |
| South Valley to Soure | 5,089.27 mi (8,190.38 km) |
| South Valley to Tabua | 5,104.67 mi (8,215.18 km) |
| South Valley to Tavira | 5,243.96 mi (8,439.34 km) |
| South Valley to Tomar | 5,115.64 mi (8,232.83 km) |
| South Valley to Tondela | 5,096.47 mi (8,201.97 km) |
| South Valley to Torre de Moncorvo | 5,112.78 mi (8,228.23 km) |
| South Valley to Torres Novas | 5,115.35 mi (8,232.37 km) |
