| Ruislip to Sesimbra | 999.60 mi (1,608.69 km) |
| Ruislip to Setubal | 990.26 mi (1,593.67 km) |
| Ruislip to Sever do Vouga | 838.73 mi (1,349.81 km) |
| Ruislip to Silves | 1,068.36 mi (1,719.36 km) |
| Ruislip to Sines | 1,026.39 mi (1,651.81 km) |
| Ruislip to Sintra | 982.91 mi (1,581.84 km) |
| Ruislip to Sobrado de Paiva | 817.69 mi (1,315.94 km) |
| Ruislip to Sobral de Monte Agraco | 964.02 mi (1,551.44 km) |
| Ruislip to Soure | 887.59 mi (1,428.44 km) |
| Ruislip to Tabua | 855.39 mi (1,376.62 km) |
| Ruislip to Tavira | 1,059.50 mi (1,705.10 km) |
| Ruislip to Tomar | 911.78 mi (1,467.37 km) |
| Ruislip to Tondela | 846.53 mi (1,362.36 km) |
| Ruislip to Torre de Moncorvo | 784.01 mi (1,261.74 km) |
| Ruislip to Torres Novas | 922.66 mi (1,484.87 km) |
