| Risca to Sesimbra | 954.91 mi (1,536.77 km) |
| Risca to Setubal | 946.53 mi (1,523.30 km) |
| Risca to Sever do Vouga | 792.11 mi (1,274.78 km) |
| Risca to Silves | 1,030.08 mi (1,657.75 km) |
| Risca to Sines | 984.15 mi (1,583.83 km) |
| Risca to Sintra | 935.72 mi (1,505.90 km) |
| Risca to Sobrado de Paiva | 770.76 mi (1,240.41 km) |
| Risca to Sobral de Monte Agraco | 917.59 mi (1,476.71 km) |
| Risca to Soure | 841.36 mi (1,354.04 km) |
| Risca to Tabua | 812.02 mi (1,306.82 km) |
| Risca to Tavira | 1,025.75 mi (1,650.78 km) |
| Risca to Tomar | 868.10 mi (1,397.08 km) |
| Risca to Tondela | 802.36 mi (1,291.27 km) |
| Risca to Torre de Moncorvo | 744.17 mi (1,197.62 km) |
| Risca to Torres Novas | 878.63 mi (1,414.03 km) |
