| Oud-Heverlee to Sestao | 632.10 mi (1,017.27 km) |
| Oud-Heverlee to Sevilla | 1,075.59 mi (1,730.99 km) |
| Oud-Heverlee to Sevilla La Nueva | 836.32 mi (1,345.93 km) |
| Oud-Heverlee to Silla | 829.87 mi (1,335.55 km) |
| Oud-Heverlee to Silleda | 827.61 mi (1,331.91 km) |
| Oud-Heverlee to Sitges | 677.18 mi (1,089.81 km) |
| Oud-Heverlee to Socuellamos | 875.46 mi (1,408.91 km) |
| Oud-Heverlee to Soller | 770.50 mi (1,240.01 km) |
| Oud-Heverlee to Solsona | 628.70 mi (1,011.80 km) |
| Oud-Heverlee to Son Servera | 777.28 mi (1,250.91 km) |
| Oud-Heverlee to Sonseca | 874.58 mi (1,407.50 km) |
| Oud-Heverlee to Sopelana | 627.27 mi (1,009.49 km) |
| Oud-Heverlee to Soria | 712.22 mi (1,146.21 km) |
| Oud-Heverlee to Suances | 654.27 mi (1,052.94 km) |
| Oud-Heverlee to Sueca | 839.08 mi (1,350.37 km) |
