| Kastamonu to Jozefow | 948.49 mi (1,526.45 km) |
| Kastamonu to Kalisz | 1,030.51 mi (1,658.44 km) |
| Kastamonu to Kamien Pomorski | 1,233.03 mi (1,984.37 km) |
| Kastamonu to Kamienna Gora | 1,065.68 mi (1,715.05 km) |
| Kastamonu to Karczew | 945.49 mi (1,521.63 km) |
| Kastamonu to Kartuzy | 1,144.90 mi (1,842.54 km) |
| Kastamonu to Katowice | 936.33 mi (1,506.88 km) |
| Kastamonu to Kedzierzyn-Kozle | 969.28 mi (1,559.91 km) |
| Kastamonu to Kepno | 1,014.05 mi (1,631.96 km) |
| Kastamonu to Ketrzyn | 1,046.67 mi (1,684.45 km) |
| Kastamonu to Kety | 914.56 mi (1,471.84 km) |
| Kastamonu to Kielce | 906.65 mi (1,459.11 km) |
| Kastamonu to Kielczow | 1,036.84 mi (1,668.64 km) |
| Kastamonu to Klobuck | 965.88 mi (1,554.43 km) |
| Kastamonu to Klodzko | 1,030.08 mi (1,657.75 km) |
