| Willebroek to Koscielisko | 696.22 mi (1,120.46 km) |
| Willebroek to Koscierzyna | 607.96 mi (978.42 km) |
| Willebroek to Kostrzyn | 556.96 mi (896.33 km) |
| Willebroek to Kostrzyn nad Odra | 451.79 mi (727.08 km) |
| Willebroek to Koszalin | 539.88 mi (868.86 km) |
| Willebroek to Kowary | 499.21 mi (803.39 km) |
| Willebroek to Kozienice | 741.78 mi (1,193.78 km) |
| Willebroek to Kozuchow | 485.94 mi (782.05 km) |
| Willebroek to Kozy | 654.30 mi (1,053.00 km) |
| Willebroek to Krakow | 685.60 mi (1,103.36 km) |
| Willebroek to Krapkowice | 594.91 mi (957.42 km) |
| Willebroek to Krasnik | 774.46 mi (1,246.37 km) |
| Willebroek to Krasnystaw | 815.53 mi (1,312.47 km) |
| Willebroek to Krosno | 770.10 mi (1,239.36 km) |
| Willebroek to Krosno Odrzanskie | 465.52 mi (749.18 km) |
