| Seini to Sesimbra | 1,740.13 mi (2,800.47 km) |
| Seini to Setubal | 1,727.69 mi (2,780.45 km) |
| Seini to Sever do Vouga | 1,627.01 mi (2,618.41 km) |
| Seini to Silves | 1,757.83 mi (2,828.96 km) |
| Seini to Sines | 1,747.61 mi (2,812.51 km) |
| Seini to Sintra | 1,740.42 mi (2,800.93 km) |
| Seini to Sobrado de Paiva | 1,612.75 mi (2,595.47 km) |
| Seini to Sobral de Monte Agraco | 1,721.71 mi (2,770.82 km) |
| Seini to Soure | 1,661.94 mi (2,674.64 km) |
| Seini to Tabua | 1,623.66 mi (2,613.04 km) |
| Seini to Tavira | 1,724.93 mi (2,776.01 km) |
| Seini to Tomar | 1,667.39 mi (2,683.40 km) |
| Seini to Tondela | 1,620.99 mi (2,608.72 km) |
| Seini to Torre de Moncorvo | 1,555.04 mi (2,502.60 km) |
| Seini to Torres Novas | 1,677.40 mi (2,699.52 km) |
