| Kastamonu to Kluczbork | 993.67 mi (1,599.16 km) |
| Kastamonu to Knurow | 946.45 mi (1,523.16 km) |
| Kastamonu to Kobylka | 959.54 mi (1,544.23 km) |
| Kastamonu to Kokoszki | 1,137.68 mi (1,830.92 km) |
| Kastamonu to Kolbuszowa | 840.82 mi (1,353.17 km) |
| Kastamonu to Kolno | 996.22 mi (1,603.26 km) |
| Kastamonu to Kolo | 1,031.58 mi (1,660.17 km) |
| Kastamonu to Kolobrzeg | 1,216.21 mi (1,957.30 km) |
| Kastamonu to Koluszki | 973.74 mi (1,567.08 km) |
| Kastamonu to Komorniki | 1,098.53 mi (1,767.91 km) |
| Kastamonu to Konin | 1,044.20 mi (1,680.48 km) |
| Kastamonu to Konskie | 928.62 mi (1,494.47 km) |
| Kastamonu to Konstancin-Jeziorna | 949.40 mi (1,527.91 km) |
| Kastamonu to Konstantynow Lodzki | 988.73 mi (1,591.20 km) |
| Kastamonu to Koronowo | 1,104.44 mi (1,777.42 km) |
