| Saint-Sebastien-sur-Loire to Setubal | 706.43 mi (1,136.89 km) |
| Saint-Sebastien-sur-Loire to Sever do Vouga | 562.26 mi (904.88 km) |
| Saint-Sebastien-sur-Loire to Silves | 777.39 mi (1,251.08 km) |
| Saint-Sebastien-sur-Loire to Sines | 740.21 mi (1,191.26 km) |
| Saint-Sebastien-sur-Loire to Sintra | 703.72 mi (1,132.53 km) |
| Saint-Sebastien-sur-Loire to Sobrado de Paiva | 542.35 mi (872.82 km) |
| Saint-Sebastien-sur-Loire to Sobral de Monte Agraco | 684.18 mi (1,101.08 km) |
| Saint-Sebastien-sur-Loire to Soure | 609.20 mi (980.42 km) |
| Saint-Sebastien-sur-Loire to Tabua | 573.90 mi (923.60 km) |
| Saint-Sebastien-sur-Loire to Tavira | 764.45 mi (1,230.27 km) |
| Saint-Sebastien-sur-Loire to Tomar | 629.37 mi (1,012.88 km) |
| Saint-Sebastien-sur-Loire to Tondela | 566.34 mi (911.44 km) |
| Saint-Sebastien-sur-Loire to Torre de Moncorvo | 499.83 mi (804.40 km) |
| Saint-Sebastien-sur-Loire to Torres Novas | 640.47 mi (1,030.73 km) |
| Saint-Sebastien-sur-Loire to Torres Vedras | 683.62 mi (1,100.18 km) |
