| Conwy to Sesimbra | 1,055.25 mi (1,698.27 km) |
| Conwy to Setubal | 1,047.51 mi (1,685.80 km) |
| Conwy to Sever do Vouga | 892.39 mi (1,436.17 km) |
| Conwy to Silves | 1,133.71 mi (1,824.54 km) |
| Conwy to Sines | 1,085.78 mi (1,747.40 km) |
| Conwy to Sintra | 1,034.64 mi (1,665.10 km) |
| Conwy to Sobrado de Paiva | 871.03 mi (1,401.78 km) |
| Conwy to Sobral de Monte Agraco | 1,017.09 mi (1,636.85 km) |
| Conwy to Soure | 941.51 mi (1,515.21 km) |
| Conwy to Tabua | 914.07 mi (1,471.05 km) |
| Conwy to Tavira | 1,131.74 mi (1,821.36 km) |
| Conwy to Tomar | 969.58 mi (1,560.40 km) |
| Conwy to Tondela | 904.02 mi (1,454.87 km) |
| Conwy to Torre de Moncorvo | 848.67 mi (1,365.80 km) |
| Conwy to Torres Novas | 979.85 mi (1,576.91 km) |
