| Southend to Sesimbra | 1,022.47 mi (1,645.51 km) |
| Southend to Setubal | 1,012.78 mi (1,629.92 km) |
| Southend to Sever do Vouga | 863.00 mi (1,388.87 km) |
| Southend to Silves | 1,088.43 mi (1,751.66 km) |
| Southend to Sines | 1,048.19 mi (1,686.90 km) |
| Southend to Sintra | 1,006.84 mi (1,620.35 km) |
| Southend to Sobrado de Paiva | 842.18 mi (1,355.35 km) |
| Southend to Sobral de Monte Agraco | 987.71 mi (1,589.57 km) |
| Southend to Soure | 911.50 mi (1,466.91 km) |
| Southend to Tabua | 878.30 mi (1,413.49 km) |
| Southend to Tavira | 1,077.75 mi (1,734.48 km) |
| Southend to Tomar | 934.57 mi (1,504.05 km) |
| Southend to Tondela | 869.79 mi (1,399.80 km) |
| Southend to Torre de Moncorvo | 805.87 mi (1,296.93 km) |
| Southend to Torres Novas | 945.54 mi (1,521.71 km) |
