| Sint-Gillis-Waas to Settimo Torinese | 452.57 mi (728.35 km) |
| Sint-Gillis-Waas to Seveso | 448.38 mi (721.60 km) |
| Sint-Gillis-Waas to Sezze | 794.22 mi (1,278.17 km) |
| Sint-Gillis-Waas to Siano | 878.66 mi (1,414.06 km) |
| Sint-Gillis-Waas to Siena | 641.36 mi (1,032.16 km) |
| Sint-Gillis-Waas to Signa | 607.69 mi (977.98 km) |
| Sint-Gillis-Waas to Silea | 536.31 mi (863.10 km) |
| Sint-Gillis-Waas to Silvi Paese | 761.19 mi (1,225.01 km) |
| Sint-Gillis-Waas to Sinalunga | 657.47 mi (1,058.09 km) |
| Sint-Gillis-Waas to Siniscola | 782.16 mi (1,258.77 km) |
| Sint-Gillis-Waas to Sinnai | 859.02 mi (1,382.45 km) |
| Sint-Gillis-Waas to Siracusa | 1,120.63 mi (1,803.48 km) |
| Sint-Gillis-Waas to Solaro | 448.85 mi (722.36 km) |
| Sint-Gillis-Waas to Soliera | 546.77 mi (879.94 km) |
| Sint-Gillis-Waas to Solofra | 881.12 mi (1,418.03 km) |
