| South River to Sesimbra | 3,403.62 mi (5,477.60 km) |
| South River to Setubal | 3,411.55 mi (5,490.36 km) |
| South River to Sever do Vouga | 3,376.62 mi (5,434.15 km) |
| South River to Silves | 3,472.74 mi (5,588.84 km) |
| South River to Sines | 3,429.21 mi (5,518.77 km) |
| South River to Sintra | 3,379.40 mi (5,438.61 km) |
| South River to Sobrado de Paiva | 3,373.51 mi (5,429.14 km) |
| South River to Sobral de Monte Agraco | 3,384.94 mi (5,447.54 km) |
| South River to Soure | 3,382.02 mi (5,442.83 km) |
| South River to Tabua | 3,402.95 mi (5,476.52 km) |
| South River to Tavira | 3,514.04 mi (5,655.30 km) |
| South River to Tomar | 3,404.86 mi (5,479.60 km) |
| South River to Tondela | 3,396.11 mi (5,465.52 km) |
| South River to Torre de Moncorvo | 3,423.56 mi (5,509.69 km) |
| South River to Torres Novas | 3,402.85 mi (5,476.35 km) |
