| Kastamonu to Sucha Beskidzka | 894.65 mi (1,439.79 km) |
| Kastamonu to Suchanino | 1,134.61 mi (1,825.97 km) |
| Kastamonu to Sulechow | 1,128.79 mi (1,816.62 km) |
| Kastamonu to Sulecin | 1,160.44 mi (1,867.54 km) |
| Kastamonu to Sulejowek | 952.73 mi (1,533.27 km) |
| Kastamonu to Suwalki | 1,010.71 mi (1,626.57 km) |
| Kastamonu to Swarzedz | 1,091.90 mi (1,757.25 km) |
| Kastamonu to Swidnica | 1,051.28 mi (1,691.87 km) |
| Kastamonu to Swidnik | 859.33 mi (1,382.96 km) |
| Kastamonu to Swidwin | 1,193.14 mi (1,920.18 km) |
| Kastamonu to Swiebodzice | 1,057.45 mi (1,701.81 km) |
| Kastamonu to Swiecie | 1,093.95 mi (1,760.54 km) |
| Kastamonu to Swiedbodzin | 1,138.15 mi (1,831.68 km) |
| Kastamonu to Swietochlowice | 940.90 mi (1,514.24 km) |
| Kastamonu to Swinoujscie | 1,247.91 mi (2,008.31 km) |
