| Sint-Gillis-Waas to Somma Lombardo | 436.01 mi (701.70 km) |
| Sint-Gillis-Waas to Somma Vesuviana | 867.53 mi (1,396.16 km) |
| Sint-Gillis-Waas to Sommacampagna | 506.77 mi (815.56 km) |
| Sint-Gillis-Waas to Sona | 504.42 mi (811.78 km) |
| Sint-Gillis-Waas to Sondrio | 436.12 mi (701.87 km) |
| Sint-Gillis-Waas to Sora | 795.59 mi (1,280.38 km) |
| Sint-Gillis-Waas to Sorbolo | 528.07 mi (849.85 km) |
| Sint-Gillis-Waas to Soresina | 487.13 mi (783.97 km) |
| Sint-Gillis-Waas to Sorisole | 455.45 mi (732.98 km) |
| Sint-Gillis-Waas to Sorrento | 880.37 mi (1,416.82 km) |
| Sint-Gillis-Waas to Sorso | 750.63 mi (1,208.02 km) |
| Sint-Gillis-Waas to Sortino | 1,108.51 mi (1,783.97 km) |
| Sint-Gillis-Waas to Soverato Marina | 1,054.95 mi (1,697.78 km) |
| Sint-Gillis-Waas to Sovicille | 641.08 mi (1,031.72 km) |
| Sint-Gillis-Waas to Spello | 695.46 mi (1,119.24 km) |
