| Willebroek to Nowy Sacz | 725.38 mi (1,167.39 km) |
| Willebroek to Nowy Targ | 698.60 mi (1,124.28 km) |
| Willebroek to Nowy Tomysl | 510.72 mi (821.92 km) |
| Willebroek to Nysa | 567.39 mi (913.13 km) |
| Willebroek to Oborniki | 541.69 mi (871.76 km) |
| Willebroek to Oborniki Slaskie | 542.47 mi (873.03 km) |
| Willebroek to Olawa | 561.72 mi (903.99 km) |
| Willebroek to Olecko | 786.49 mi (1,265.74 km) |
| Willebroek to Olesnica | 563.69 mi (907.18 km) |
| Willebroek to Olesno | 610.52 mi (982.54 km) |
| Willebroek to Olkusz | 666.50 mi (1,072.62 km) |
| Willebroek to Olsztyn | 702.55 mi (1,130.65 km) |
| Willebroek to Opalenica | 522.47 mi (840.83 km) |
| Willebroek to Opoczno | 687.90 mi (1,107.07 km) |
| Willebroek to Opole | 591.40 mi (951.77 km) |
