| Kastamonu to Noventa Vicentina | 1,146.05 mi (1,844.38 km) |
| Kastamonu to Novi di Modena | 1,174.53 mi (1,890.23 km) |
| Kastamonu to Novi Ligure | 1,277.62 mi (2,056.13 km) |
| Kastamonu to Nuoro | 1,275.42 mi (2,052.59 km) |
| Kastamonu to Occhiobello | 1,141.48 mi (1,837.04 km) |
| Kastamonu to Oderzo | 1,104.17 mi (1,776.99 km) |
| Kastamonu to Oggiono | 1,254.54 mi (2,018.99 km) |
| Kastamonu to Olbia | 1,259.34 mi (2,026.72 km) |
| Kastamonu to Oleggio | 1,287.98 mi (2,072.81 km) |
| Kastamonu to Olgiate Comasco | 1,272.94 mi (2,048.60 km) |
| Kastamonu to Olgiate Olona | 1,276.11 mi (2,053.69 km) |
| Kastamonu to Omegna | 1,300.35 mi (2,092.71 km) |
| Kastamonu to Opera | 1,258.74 mi (2,025.75 km) |
| Kastamonu to Oppeano | 1,163.09 mi (1,871.81 km) |
| Kastamonu to Orbassano | 1,339.21 mi (2,155.25 km) |
