| Belfast to Koscian | 943.25 mi (1,518.01 km) |
| Belfast to Koscielisko | 1,151.48 mi (1,853.13 km) |
| Belfast to Koscierzyna | 958.75 mi (1,542.96 km) |
| Belfast to Kostrzyn | 959.19 mi (1,543.66 km) |
| Belfast to Kostrzyn nad Odra | 852.77 mi (1,372.40 km) |
| Belfast to Koszalin | 886.20 mi (1,426.20 km) |
| Belfast to Kowary | 944.17 mi (1,519.49 km) |
| Belfast to Kozienice | 1,152.06 mi (1,854.06 km) |
| Belfast to Kozuchow | 909.22 mi (1,463.25 km) |
| Belfast to Kozy | 1,103.68 mi (1,776.21 km) |
| Belfast to Krakow | 1,129.02 mi (1,816.98 km) |
| Belfast to Krapkowice | 1,038.44 mi (1,671.20 km) |
| Belfast to Krasnik | 1,195.51 mi (1,923.99 km) |
| Belfast to Krasnystaw | 1,232.39 mi (1,983.34 km) |
| Belfast to Krosno | 1,212.93 mi (1,952.02 km) |
