| Kastamonu to Koscian | 1,092.76 mi (1,758.63 km) |
| Kastamonu to Koscielisko | 865.91 mi (1,393.55 km) |
| Kastamonu to Koscierzyna | 1,140.64 mi (1,835.68 km) |
| Kastamonu to Kostrzyn | 1,086.28 mi (1,748.20 km) |
| Kastamonu to Kostrzyn nad Odra | 1,181.50 mi (1,901.44 km) |
| Kastamonu to Koszalin | 1,198.42 mi (1,928.67 km) |
| Kastamonu to Kowary | 1,073.50 mi (1,727.64 km) |
| Kastamonu to Kozienice | 911.19 mi (1,466.42 km) |
| Kastamonu to Kozuchow | 1,116.76 mi (1,797.25 km) |
| Kastamonu to Kozy | 915.71 mi (1,473.69 km) |
| Kastamonu to Krakow | 895.05 mi (1,440.44 km) |
| Kastamonu to Krapkowice | 982.30 mi (1,580.86 km) |
| Kastamonu to Krasnik | 858.58 mi (1,381.74 km) |
| Kastamonu to Krasnystaw | 833.35 mi (1,341.14 km) |
| Kastamonu to Krosno | 815.59 mi (1,312.57 km) |
