| Upminster to Sesimbra | 1,012.70 mi (1,629.79 km) |
| Upminster to Setubal | 1,003.15 mi (1,614.42 km) |
| Upminster to Sever do Vouga | 852.65 mi (1,372.21 km) |
| Upminster to Silves | 1,079.78 mi (1,737.73 km) |
| Upminster to Sines | 1,038.85 mi (1,671.87 km) |
| Upminster to Sintra | 996.65 mi (1,603.96 km) |
| Upminster to Sobrado de Paiva | 831.73 mi (1,338.54 km) |
| Upminster to Sobral de Monte Agraco | 977.62 mi (1,573.32 km) |
| Upminster to Soure | 901.30 mi (1,450.50 km) |
| Upminster to Tabua | 868.49 mi (1,397.69 km) |
| Upminster to Tavira | 1,069.81 mi (1,721.70 km) |
| Upminster to Tomar | 924.82 mi (1,488.35 km) |
| Upminster to Tondela | 859.83 mi (1,383.77 km) |
| Upminster to Torre de Moncorvo | 796.44 mi (1,281.74 km) |
| Upminster to Torres Novas | 935.75 mi (1,505.95 km) |
