| Belfast to Jozefow | 1,125.51 mi (1,811.34 km) |
| Belfast to Kalisz | 1,008.21 mi (1,622.55 km) |
| Belfast to Kamien Pomorski | 833.13 mi (1,340.80 km) |
| Belfast to Kamienna Gora | 952.35 mi (1,532.66 km) |
| Belfast to Karczew | 1,127.33 mi (1,814.27 km) |
| Belfast to Kartuzy | 964.39 mi (1,552.04 km) |
| Belfast to Katowice | 1,086.17 mi (1,748.02 km) |
| Belfast to Kedzierzyn-Kozle | 1,051.17 mi (1,691.70 km) |
| Belfast to Kepno | 1,016.35 mi (1,635.66 km) |
| Belfast to Ketrzyn | 1,093.81 mi (1,760.31 km) |
| Belfast to Kety | 1,105.30 mi (1,778.80 km) |
| Belfast to Kielce | 1,133.31 mi (1,823.89 km) |
| Belfast to Kielczow | 988.00 mi (1,590.04 km) |
| Belfast to Klobuck | 1,064.18 mi (1,712.64 km) |
| Belfast to Klodzko | 987.10 mi (1,588.59 km) |
