| Willebroek to Knurow | 629.05 mi (1,012.35 km) |
| Willebroek to Kobylka | 724.46 mi (1,165.91 km) |
| Willebroek to Kokoszki | 632.03 mi (1,017.16 km) |
| Willebroek to Kolbuszowa | 762.44 mi (1,227.03 km) |
| Willebroek to Kolno | 758.64 mi (1,220.91 km) |
| Willebroek to Kolo | 615.80 mi (991.03 km) |
| Willebroek to Kolobrzeg | 516.18 mi (830.72 km) |
| Willebroek to Koluszki | 665.57 mi (1,071.13 km) |
| Willebroek to Komorniki | 534.32 mi (859.90 km) |
| Willebroek to Konin | 600.32 mi (966.13 km) |
| Willebroek to Konskie | 694.55 mi (1,117.78 km) |
| Willebroek to Konstancin-Jeziorna | 721.06 mi (1,160.43 km) |
| Willebroek to Konstantynow Lodzki | 645.61 mi (1,039.02 km) |
| Willebroek to Koronowo | 594.26 mi (956.36 km) |
| Willebroek to Koscian | 531.46 mi (855.30 km) |
