| Gourock to Sesimbra | 1,225.84 mi (1,972.79 km) |
| Gourock to Setubal | 1,218.81 mi (1,961.49 km) |
| Gourock to Sever do Vouga | 1,063.84 mi (1,712.08 km) |
| Gourock to Silves | 1,307.58 mi (2,104.35 km) |
| Gourock to Sines | 1,257.64 mi (2,023.98 km) |
| Gourock to Sintra | 1,203.75 mi (1,937.26 km) |
| Gourock to Sobrado de Paiva | 1,042.61 mi (1,677.91 km) |
| Gourock to Sobral de Monte Agraco | 1,186.94 mi (1,910.20 km) |
| Gourock to Soure | 1,112.49 mi (1,790.38 km) |
| Gourock to Tabua | 1,087.23 mi (1,749.73 km) |
| Gourock to Tavira | 1,308.19 mi (2,105.33 km) |
| Gourock to Tomar | 1,141.84 mi (1,837.62 km) |
| Gourock to Tondela | 1,076.83 mi (1,733.00 km) |
| Gourock to Torre de Moncorvo | 1,024.72 mi (1,649.13 km) |
| Gourock to Torres Novas | 1,151.76 mi (1,853.57 km) |
