| Seaford to Sierpc | 845.46 mi (1,360.63 km) |
| Seaford to Skarzysko-Kamienna | 903.54 mi (1,454.11 km) |
| Seaford to Skawina | 868.62 mi (1,397.91 km) |
| Seaford to Skierniewice | 866.03 mi (1,393.75 km) |
| Seaford to Skoczow | 825.55 mi (1,328.60 km) |
| Seaford to Skwierzyna | 670.33 mi (1,078.79 km) |
| Seaford to Slawno | 736.88 mi (1,185.89 km) |
| Seaford to Slubice | 629.82 mi (1,013.60 km) |
| Seaford to Slupca | 768.88 mi (1,237.39 km) |
| Seaford to Slupsk | 752.42 mi (1,210.90 km) |
| Seaford to Sochaczew | 868.96 mi (1,398.46 km) |
| Seaford to Sokolka | 1,005.22 mi (1,617.75 km) |
| Seaford to Sokolow Podlaski | 953.76 mi (1,534.94 km) |
| Seaford to Solec Kujawski | 786.71 mi (1,266.09 km) |
| Seaford to Sopot | 812.65 mi (1,307.83 km) |
