| Penarth to Sierpc | 969.07 mi (1,559.57 km) |
| Penarth to Skarzysko-Kamienna | 1,036.68 mi (1,668.37 km) |
| Penarth to Skawina | 1,007.29 mi (1,621.08 km) |
| Penarth to Skierniewice | 995.06 mi (1,601.40 km) |
| Penarth to Skoczow | 965.55 mi (1,553.91 km) |
| Penarth to Skwierzyna | 795.77 mi (1,280.66 km) |
| Penarth to Slawno | 848.48 mi (1,365.50 km) |
| Penarth to Slubice | 757.09 mi (1,218.42 km) |
| Penarth to Slupca | 896.39 mi (1,442.60 km) |
| Penarth to Slupsk | 863.39 mi (1,389.49 km) |
| Penarth to Sochaczew | 996.45 mi (1,603.64 km) |
| Penarth to Sokolka | 1,125.46 mi (1,811.25 km) |
| Penarth to Sokolow Podlaski | 1,079.84 mi (1,737.83 km) |
| Penarth to Solec Kujawski | 908.94 mi (1,462.80 km) |
| Penarth to Sopot | 924.82 mi (1,488.35 km) |
