| Ostend to Serik | 1,695.99 mi (2,729.43 km) |
| Ostend to Serinhisar | 1,592.15 mi (2,562.32 km) |
| Ostend to Serinyol | 1,926.96 mi (3,101.14 km) |
| Ostend to Seydisehir | 1,701.65 mi (2,738.54 km) |
| Ostend to Seyhan | 1,862.76 mi (2,997.82 km) |
| Ostend to Seyitgazi | 1,561.40 mi (2,512.83 km) |
| Ostend to Siirt | 2,097.08 mi (3,374.92 km) |
| Ostend to Sile | 1,441.65 mi (2,320.12 km) |
| Ostend to Silifke | 1,834.61 mi (2,952.52 km) |
| Ostend to Silivri | 1,390.33 mi (2,237.52 km) |
| Ostend to Silopi | 2,148.83 mi (3,458.21 km) |
| Ostend to Simav | 1,509.37 mi (2,429.09 km) |
| Ostend to Sinanpasa | 1,575.28 mi (2,535.17 km) |
| Ostend to Sindirgi | 1,470.11 mi (2,365.91 km) |
| Ostend to Sinop | 1,639.60 mi (2,638.68 km) |
