| Greenock to Sinop | 2,011.19 mi (3,236.69 km) |
| Greenock to Siran | 2,249.01 mi (3,619.43 km) |
| Greenock to Sirnak | 2,506.16 mi (4,033.27 km) |
| Greenock to Sirvan | 2,462.83 mi (3,963.54 km) |
| Greenock to Sivas | 2,190.22 mi (3,524.82 km) |
| Greenock to Sivasli | 1,983.93 mi (3,192.83 km) |
| Greenock to Siverek | 2,375.65 mi (3,823.23 km) |
| Greenock to Sivrice | 2,340.81 mi (3,767.17 km) |
| Greenock to Sivrihisar | 2,001.42 mi (3,220.98 km) |
| Greenock to Sogut | 1,923.41 mi (3,095.43 km) |
| Greenock to Sogutlu | 1,890.65 mi (3,042.70 km) |
| Greenock to Soke | 1,942.71 mi (3,126.49 km) |
| Greenock to Solhan | 2,381.37 mi (3,832.45 km) |
| Greenock to Soma | 1,873.75 mi (3,015.51 km) |
| Greenock to Sorgun | 2,118.45 mi (3,409.32 km) |
