| Saint-Sebastien-sur-Loire to Sestao | 279.02 mi (449.04 km) |
| Saint-Sebastien-sur-Loire to Sevilla | 725.68 mi (1,167.87 km) |
| Saint-Sebastien-sur-Loire to Sevilla La Nueva | 490.43 mi (789.27 km) |
| Saint-Sebastien-sur-Loire to Silla | 544.88 mi (876.90 km) |
| Saint-Sebastien-sur-Loire to Silleda | 452.86 mi (728.80 km) |
| Saint-Sebastien-sur-Loire to Sitges | 443.94 mi (714.45 km) |
| Saint-Sebastien-sur-Loire to Socuellamos | 550.69 mi (886.26 km) |
| Saint-Sebastien-sur-Loire to Soller | 555.40 mi (893.83 km) |
| Saint-Sebastien-sur-Loire to Solsona | 389.57 mi (626.95 km) |
| Saint-Sebastien-sur-Loire to Son Servera | 577.94 mi (930.10 km) |
| Saint-Sebastien-sur-Loire to Sonseca | 533.02 mi (857.82 km) |
| Saint-Sebastien-sur-Loire to Sopelana | 273.97 mi (440.91 km) |
| Saint-Sebastien-sur-Loire to Soria | 378.95 mi (609.87 km) |
| Saint-Sebastien-sur-Loire to Suances | 288.67 mi (464.57 km) |
| Saint-Sebastien-sur-Loire to Sueca | 556.35 mi (895.35 km) |
