| Conwy to Sierpc | 971.16 mi (1,562.94 km) |
| Conwy to Skarzysko-Kamienna | 1,053.18 mi (1,694.93 km) |
| Conwy to Skawina | 1,034.96 mi (1,665.61 km) |
| Conwy to Skierniewice | 1,005.11 mi (1,617.57 km) |
| Conwy to Skoczow | 996.67 mi (1,603.98 km) |
| Conwy to Skwierzyna | 803.79 mi (1,293.58 km) |
| Conwy to Slawno | 836.69 mi (1,346.52 km) |
| Conwy to Slubice | 768.77 mi (1,237.22 km) |
| Conwy to Slupca | 905.58 mi (1,457.39 km) |
| Conwy to Slupsk | 850.50 mi (1,368.75 km) |
| Conwy to Sochaczew | 1,004.03 mi (1,615.83 km) |
| Conwy to Sokolka | 1,120.56 mi (1,803.36 km) |
| Conwy to Sokolow Podlaski | 1,084.09 mi (1,744.68 km) |
| Conwy to Solec Kujawski | 910.02 mi (1,464.54 km) |
| Conwy to Sopot | 912.20 mi (1,468.05 km) |
