| Clay to Sesena | 4,432.82 mi (7,133.93 km) |
| Clay to Sestao | 4,379.46 mi (7,048.06 km) |
| Clay to Sevilla | 4,398.52 mi (7,078.73 km) |
| Clay to Sevilla La Nueva | 4,410.14 mi (7,097.43 km) |
| Clay to Silla | 4,613.06 mi (7,424.01 km) |
| Clay to Silleda | 4,148.21 mi (6,675.90 km) |
| Clay to Sitges | 4,662.46 mi (7,503.50 km) |
| Clay to Socuellamos | 4,499.41 mi (7,241.09 km) |
| Clay to Soller | 4,749.56 mi (7,643.68 km) |
| Clay to Solsona | 4,626.43 mi (7,445.51 km) |
| Clay to Son Servera | 4,785.40 mi (7,701.36 km) |
| Clay to Sonseca | 4,431.68 mi (7,132.10 km) |
| Clay to Sopelana | 4,378.83 mi (7,047.05 km) |
| Clay to Soria | 4,446.18 mi (7,155.43 km) |
| Clay to Suances | 4,327.66 mi (6,964.70 km) |
