| South Houston to Sesena | 5,007.92 mi (8,059.47 km) |
| South Houston to Sestao | 4,950.07 mi (7,966.36 km) |
| South Houston to Sevilla | 4,976.18 mi (8,008.38 km) |
| South Houston to Sevilla La Nueva | 4,985.10 mi (8,022.75 km) |
| South Houston to Silla | 5,187.72 mi (8,348.83 km) |
| South Houston to Silleda | 4,721.93 mi (7,599.21 km) |
| South Houston to Sitges | 5,233.73 mi (8,422.87 km) |
| South Houston to Socuellamos | 5,074.99 mi (8,167.40 km) |
| South Houston to Soller | 5,322.36 mi (8,565.51 km) |
| South Houston to Solsona | 5,196.71 mi (8,363.29 km) |
| South Houston to Son Servera | 5,358.05 mi (8,622.95 km) |
| South Houston to Sonseca | 5,007.26 mi (8,058.41 km) |
| South Houston to Sopelana | 4,949.31 mi (7,965.15 km) |
| South Houston to Soria | 5,018.82 mi (8,077.01 km) |
| South Houston to Suances | 4,898.59 mi (7,883.51 km) |
