| Oud-Heverlee to Settimo Torinese | 419.02 mi (674.34 km) |
| Oud-Heverlee to Seveso | 413.23 mi (665.03 km) |
| Oud-Heverlee to Sezze | 758.78 mi (1,221.14 km) |
| Oud-Heverlee to Siano | 843.03 mi (1,356.73 km) |
| Oud-Heverlee to Siena | 606.02 mi (975.30 km) |
| Oud-Heverlee to Signa | 572.31 mi (921.05 km) |
| Oud-Heverlee to Silea | 500.78 mi (805.93 km) |
| Oud-Heverlee to Silvi Paese | 725.51 mi (1,167.59 km) |
| Oud-Heverlee to Sinalunga | 622.03 mi (1,001.06 km) |
| Oud-Heverlee to Siniscola | 748.77 mi (1,205.04 km) |
| Oud-Heverlee to Sinnai | 826.47 mi (1,330.07 km) |
| Oud-Heverlee to Siracusa | 1,085.37 mi (1,746.74 km) |
| Oud-Heverlee to Solaro | 413.75 mi (665.87 km) |
| Oud-Heverlee to Soliera | 511.21 mi (822.72 km) |
| Oud-Heverlee to Solofra | 845.48 mi (1,360.67 km) |
