| Sinop to Sierpc | 1,037.84 mi (1,670.25 km) |
| Sinop to Skarzysko-Kamienna | 919.87 mi (1,480.39 km) |
| Sinop to Skawina | 915.04 mi (1,472.62 km) |
| Sinop to Skierniewice | 981.99 mi (1,580.35 km) |
| Sinop to Skoczow | 949.23 mi (1,527.65 km) |
| Sinop to Skwierzyna | 1,168.63 mi (1,880.73 km) |
| Sinop to Slawno | 1,197.23 mi (1,926.76 km) |
| Sinop to Slubice | 1,194.22 mi (1,921.92 km) |
| Sinop to Slupca | 1,073.55 mi (1,727.71 km) |
| Sinop to Slupsk | 1,190.65 mi (1,916.16 km) |
| Sinop to Sochaczew | 990.82 mi (1,594.57 km) |
| Sinop to Sokolka | 951.77 mi (1,531.73 km) |
| Sinop to Sokolow Podlaski | 935.39 mi (1,505.37 km) |
| Sinop to Solec Kujawski | 1,092.97 mi (1,758.97 km) |
| Sinop to Sopot | 1,142.84 mi (1,839.23 km) |
