| Willebroek to Krotoszyn | 564.40 mi (908.32 km) |
| Willebroek to Kruszwica | 604.93 mi (973.54 km) |
| Willebroek to Krynica | 740.28 mi (1,191.37 km) |
| Willebroek to Krzeszowice | 671.41 mi (1,080.52 km) |
| Willebroek to Kudowa-Zdroj | 520.24 mi (837.24 km) |
| Willebroek to Kutno | 646.89 mi (1,041.07 km) |
| Willebroek to Kwidzyn | 639.74 mi (1,029.56 km) |
| Willebroek to Lancut | 785.20 mi (1,263.65 km) |
| Willebroek to Lapy | 795.96 mi (1,280.98 km) |
| Willebroek to Lask | 637.46 mi (1,025.89 km) |
| Willebroek to Laziska Gorne | 637.17 mi (1,025.42 km) |
| Willebroek to Lebork | 607.34 mi (977.42 km) |
| Willebroek to Leczna | 799.98 mi (1,287.45 km) |
| Willebroek to Leczyca | 639.67 mi (1,029.44 km) |
| Willebroek to Legionowo | 711.15 mi (1,144.48 km) |
