| Staines-upon-Thames to Sesimbra | 989.36 mi (1,592.23 km) |
| Staines-upon-Thames to Setubal | 980.02 mi (1,577.18 km) |
| Staines-upon-Thames to Sever do Vouga | 828.55 mi (1,333.43 km) |
| Staines-upon-Thames to Silves | 1,058.04 mi (1,702.75 km) |
| Staines-upon-Thames to Sines | 1,016.12 mi (1,635.28 km) |
| Staines-upon-Thames to Sintra | 972.72 mi (1,565.44 km) |
| Staines-upon-Thames to Sobrado de Paiva | 807.52 mi (1,299.57 km) |
| Staines-upon-Thames to Sobral de Monte Agraco | 953.82 mi (1,535.02 km) |
| Staines-upon-Thames to Soure | 877.40 mi (1,412.04 km) |
| Staines-upon-Thames to Tabua | 845.16 mi (1,360.15 km) |
| Staines-upon-Thames to Tavira | 1,049.15 mi (1,688.44 km) |
| Staines-upon-Thames to Tomar | 901.54 mi (1,450.89 km) |
| Staines-upon-Thames to Tondela | 836.31 mi (1,345.90 km) |
| Staines-upon-Thames to Torre de Moncorvo | 773.73 mi (1,245.20 km) |
| Staines-upon-Thames to Torres Novas | 912.42 mi (1,468.40 km) |
