| Gloucester to Sierpc | 923.32 mi (1,485.94 km) |
| Gloucester to Skarzysko-Kamienna | 993.53 mi (1,598.93 km) |
| Gloucester to Skawina | 966.49 mi (1,555.42 km) |
| Gloucester to Skierniewice | 950.66 mi (1,529.93 km) |
| Gloucester to Skoczow | 925.50 mi (1,489.45 km) |
| Gloucester to Skwierzyna | 750.70 mi (1,208.14 km) |
| Gloucester to Slawno | 800.74 mi (1,288.67 km) |
| Gloucester to Slubice | 712.58 mi (1,146.78 km) |
| Gloucester to Slupca | 851.70 mi (1,370.67 km) |
| Gloucester to Slupsk | 815.55 mi (1,312.51 km) |
| Gloucester to Sochaczew | 951.62 mi (1,531.48 km) |
| Gloucester to Sokolka | 1,078.85 mi (1,736.24 km) |
| Gloucester to Sokolow Podlaski | 1,034.55 mi (1,664.94 km) |
| Gloucester to Solec Kujawski | 862.96 mi (1,388.79 km) |
| Gloucester to Sopot | 877.08 mi (1,411.52 km) |
