| Castelnaudary to Mouscron | 515.76 mi (830.04 km) |
| Castelnaudary to Namur | 512.60 mi (824.95 km) |
| Castelnaudary to Neder-Over-Heembeek | 536.09 mi (862.75 km) |
| Castelnaudary to Neerpelt | 570.52 mi (918.16 km) |
| Castelnaudary to Nevele | 538.28 mi (866.27 km) |
| Castelnaudary to Niel | 550.20 mi (885.46 km) |
| Castelnaudary to Nieuwpoort | 540.12 mi (869.23 km) |
| Castelnaudary to Nijlen | 556.73 mi (895.98 km) |
| Castelnaudary to Ninove | 528.19 mi (850.03 km) |
| Castelnaudary to Nivelles | 514.13 mi (827.40 km) |
| Castelnaudary to Olen | 557.81 mi (897.71 km) |
| Castelnaudary to Oostakker | 544.32 mi (876.00 km) |
| Castelnaudary to Oosterzele | 534.36 mi (859.97 km) |
| Castelnaudary to Oostkamp | 544.74 mi (876.67 km) |
| Castelnaudary to Opglabbeek | 560.57 mi (902.15 km) |
