| Severn to Sesimbra | 3,550.98 mi (5,714.75 km) |
| Severn to Setubal | 3,559.04 mi (5,727.72 km) |
| Severn to Sever do Vouga | 3,525.90 mi (5,674.39 km) |
| Severn to Silves | 3,619.23 mi (5,824.59 km) |
| Severn to Sines | 3,576.23 mi (5,755.38 km) |
| Severn to Sintra | 3,526.97 mi (5,676.11 km) |
| Severn to Sobrado de Paiva | 3,523.01 mi (5,669.74 km) |
| Severn to Sobral de Monte Agraco | 3,532.76 mi (5,685.43 km) |
| Severn to Soure | 3,530.76 mi (5,682.20 km) |
| Severn to Tabua | 3,552.05 mi (5,716.47 km) |
| Severn to Tavira | 3,660.72 mi (5,891.37 km) |
| Severn to Tomar | 3,553.32 mi (5,718.52 km) |
| Severn to Tondela | 3,545.31 mi (5,705.62 km) |
| Severn to Torre de Moncorvo | 3,573.39 mi (5,750.82 km) |
| Severn to Torres Novas | 3,551.17 mi (5,715.06 km) |
