| Middelkerke to Siran | 1,885.72 mi (3,034.78 km) |
| Middelkerke to Sirnak | 2,140.22 mi (3,444.35 km) |
| Middelkerke to Sirvan | 2,098.36 mi (3,376.98 km) |
| Middelkerke to Sivas | 1,814.08 mi (2,919.48 km) |
| Middelkerke to Sivasli | 1,568.02 mi (2,523.48 km) |
| Middelkerke to Siverek | 1,997.02 mi (3,213.90 km) |
| Middelkerke to Sivrice | 1,966.50 mi (3,164.77 km) |
| Middelkerke to Sivrihisar | 1,598.67 mi (2,572.82 km) |
| Middelkerke to Sogut | 1,518.16 mi (2,443.24 km) |
| Middelkerke to Sogutlu | 1,492.46 mi (2,401.88 km) |
| Middelkerke to Soke | 1,514.72 mi (2,437.71 km) |
| Middelkerke to Solhan | 2,018.42 mi (3,248.33 km) |
| Middelkerke to Soma | 1,453.03 mi (2,338.42 km) |
| Middelkerke to Sorgun | 1,734.40 mi (2,791.24 km) |
| Middelkerke to Suhut | 1,600.19 mi (2,575.26 km) |
