| Gladbeck to Siran | 1,716.22 mi (2,761.99 km) |
| Gladbeck to Sirnak | 1,971.85 mi (3,173.39 km) |
| Gladbeck to Sirvan | 1,929.53 mi (3,105.28 km) |
| Gladbeck to Sivas | 1,648.23 mi (2,652.57 km) |
| Gladbeck to Sivasli | 1,420.67 mi (2,286.34 km) |
| Gladbeck to Siverek | 1,832.32 mi (2,948.84 km) |
| Gladbeck to Sivrice | 1,800.33 mi (2,897.36 km) |
| Gladbeck to Sivrihisar | 1,443.47 mi (2,323.03 km) |
| Gladbeck to Sogut | 1,364.15 mi (2,195.39 km) |
| Gladbeck to Sogutlu | 1,334.74 mi (2,148.05 km) |
| Gladbeck to Soke | 1,377.00 mi (2,216.07 km) |
| Gladbeck to Solhan | 1,849.06 mi (2,975.77 km) |
| Gladbeck to Soma | 1,309.07 mi (2,106.75 km) |
| Gladbeck to Sorgun | 1,571.16 mi (2,528.54 km) |
| Gladbeck to Suhut | 1,450.40 mi (2,334.19 km) |
