| Harlingen to Kalisz | 540.77 mi (870.29 km) |
| Harlingen to Kamien Pomorski | 387.06 mi (622.91 km) |
| Harlingen to Kamienna Gora | 480.09 mi (772.63 km) |
| Harlingen to Karczew | 666.46 mi (1,072.56 km) |
| Harlingen to Kartuzy | 527.16 mi (848.38 km) |
| Harlingen to Katowice | 614.24 mi (988.52 km) |
| Harlingen to Kedzierzyn-Kozle | 579.05 mi (931.89 km) |
| Harlingen to Kepno | 546.41 mi (879.36 km) |
| Harlingen to Ketrzyn | 655.38 mi (1,054.74 km) |
| Harlingen to Kety | 633.07 mi (1,018.83 km) |
| Harlingen to Kielce | 664.33 mi (1,069.14 km) |
| Harlingen to Kielczow | 516.87 mi (831.81 km) |
| Harlingen to Klobuck | 593.74 mi (955.53 km) |
| Harlingen to Klodzko | 514.83 mi (828.54 km) |
| Harlingen to Kluczbork | 562.91 mi (905.92 km) |
