| Kastamonu to Nowy Dwor Mazowiecki | 978.56 mi (1,574.84 km) |
| Kastamonu to Nowy Sacz | 849.81 mi (1,367.65 km) |
| Kastamonu to Nowy Targ | 868.11 mi (1,397.09 km) |
| Kastamonu to Nowy Tomysl | 1,119.94 mi (1,802.37 km) |
| Kastamonu to Nysa | 1,005.82 mi (1,618.71 km) |
| Kastamonu to Oborniki | 1,110.59 mi (1,787.31 km) |
| Kastamonu to Oborniki Slaskie | 1,052.87 mi (1,694.44 km) |
| Kastamonu to Olawa | 1,024.46 mi (1,648.71 km) |
| Kastamonu to Olecko | 1,016.86 mi (1,636.47 km) |
| Kastamonu to Olesnica | 1,031.84 mi (1,660.58 km) |
| Kastamonu to Olesno | 982.23 mi (1,580.74 km) |
| Kastamonu to Olkusz | 917.34 mi (1,476.31 km) |
| Kastamonu to Olsztyn | 1,053.80 mi (1,695.92 km) |
| Kastamonu to Opalenica | 1,109.97 mi (1,786.32 km) |
| Kastamonu to Opoczno | 940.97 mi (1,514.34 km) |
