| Kastamonu to Imatra | 1,384.58 mi (2,228.26 km) |
| Kastamonu to Jakobstad | 1,603.59 mi (2,580.73 km) |
| Kastamonu to Jamsa | 1,460.00 mi (2,349.64 km) |
| Kastamonu to Janakkala | 1,403.73 mi (2,259.09 km) |
| Kastamonu to Jarvenpaa | 1,369.96 mi (2,204.74 km) |
| Kastamonu to Joensuu | 1,475.70 mi (2,374.91 km) |
| Kastamonu to Joutseno | 1,382.23 mi (2,224.48 km) |
| Kastamonu to Jyvaskyla | 1,479.31 mi (2,380.73 km) |
| Kastamonu to Jyvaskylan Maalaiskunta | 1,482.44 mi (2,385.75 km) |
| Kastamonu to Kaarina | 1,400.65 mi (2,254.12 km) |
| Kastamonu to Kajaani | 1,597.57 mi (2,571.04 km) |
| Kastamonu to Kalajoki | 1,629.53 mi (2,622.47 km) |
| Kastamonu to Kangasala | 1,445.96 mi (2,327.05 km) |
| Kastamonu to Kankaanpaa | 1,488.16 mi (2,394.97 km) |
| Kastamonu to Karhula | 1,353.77 mi (2,178.69 km) |
