| Knokke-Heist to Somma Lombardo | 462.55 mi (744.40 km) |
| Knokke-Heist to Somma Vesuviana | 897.03 mi (1,443.62 km) |
| Knokke-Heist to Sommacampagna | 537.04 mi (864.28 km) |
| Knokke-Heist to Sona | 534.72 mi (860.55 km) |
| Knokke-Heist to Sondrio | 466.10 mi (750.12 km) |
| Knokke-Heist to Sora | 824.94 mi (1,327.62 km) |
| Knokke-Heist to Sorbolo | 556.77 mi (896.03 km) |
| Knokke-Heist to Soresina | 515.46 mi (829.55 km) |
| Knokke-Heist to Sorisole | 484.20 mi (779.24 km) |
| Knokke-Heist to Sorrento | 909.57 mi (1,463.81 km) |
| Knokke-Heist to Sorso | 770.82 mi (1,240.52 km) |
| Knokke-Heist to Sortino | 1,135.72 mi (1,827.77 km) |
| Knokke-Heist to Soverato Marina | 1,084.81 mi (1,745.84 km) |
| Knokke-Heist to Sovicille | 668.88 mi (1,076.46 km) |
| Knokke-Heist to Spello | 725.01 mi (1,166.79 km) |
