| Greenock to Sierpc | 999.24 mi (1,608.12 km) |
| Greenock to Skarzysko-Kamienna | 1,098.84 mi (1,768.42 km) |
| Greenock to Skawina | 1,096.16 mi (1,764.10 km) |
| Greenock to Skierniewice | 1,043.22 mi (1,678.89 km) |
| Greenock to Skoczow | 1,063.41 mi (1,711.39 km) |
| Greenock to Skwierzyna | 846.22 mi (1,361.86 km) |
| Greenock to Slawno | 850.02 mi (1,367.97 km) |
| Greenock to Slubice | 817.70 mi (1,315.97 km) |
| Greenock to Slupca | 945.63 mi (1,521.85 km) |
| Greenock to Slupsk | 861.67 mi (1,386.73 km) |
| Greenock to Sochaczew | 1,038.75 mi (1,671.70 km) |
| Greenock to Sokolka | 1,134.65 mi (1,826.04 km) |
| Greenock to Sokolow Podlaski | 1,112.03 mi (1,789.64 km) |
| Greenock to Solec Kujawski | 938.72 mi (1,510.73 km) |
| Greenock to Sopot | 921.38 mi (1,482.82 km) |
