| Southgate to Sesimbra | 1,009.26 mi (1,624.25 km) |
| Southgate to Setubal | 999.85 mi (1,609.10 km) |
| Southgate to Sever do Vouga | 848.68 mi (1,365.82 km) |
| Southgate to Silves | 1,077.39 mi (1,733.90 km) |
| Southgate to Sines | 1,035.82 mi (1,666.98 km) |
| Southgate to Sintra | 992.81 mi (1,597.77 km) |
| Southgate to Sobrado de Paiva | 827.68 mi (1,332.02 km) |
| Southgate to Sobral de Monte Agraco | 973.86 mi (1,567.28 km) |
| Southgate to Soure | 897.47 mi (1,444.34 km) |
| Southgate to Tabua | 865.04 mi (1,392.15 km) |
| Southgate to Tavira | 1,068.11 mi (1,718.96 km) |
| Southgate to Tomar | 921.41 mi (1,482.87 km) |
| Southgate to Tondela | 856.25 mi (1,378.00 km) |
| Southgate to Torre de Moncorvo | 793.40 mi (1,276.85 km) |
| Southgate to Torres Novas | 932.31 mi (1,500.41 km) |
