| Castanet-Tolosan to Leopoldsburg | 553.72 mi (891.12 km) |
| Castanet-Tolosan to Lessines | 509.45 mi (819.88 km) |
| Castanet-Tolosan to Leuven | 530.65 mi (854.00 km) |
| Castanet-Tolosan to Lichtervelde | 525.01 mi (844.93 km) |
| Castanet-Tolosan to Liedekerke | 522.13 mi (840.28 km) |
| Castanet-Tolosan to Liege | 528.00 mi (849.74 km) |
| Castanet-Tolosan to Lierre | 545.47 mi (877.85 km) |
| Castanet-Tolosan to Lille | 555.45 mi (893.92 km) |
| Castanet-Tolosan to Lint | 543.36 mi (874.45 km) |
| Castanet-Tolosan to Lochristi | 535.25 mi (861.41 km) |
| Castanet-Tolosan to Lokeren | 536.73 mi (863.78 km) |
| Castanet-Tolosan to Lommel | 562.18 mi (904.74 km) |
| Castanet-Tolosan to Londerzeel | 533.45 mi (858.50 km) |
| Castanet-Tolosan to Louvain-la-Neuve | 513.76 mi (826.82 km) |
| Castanet-Tolosan to Lovendegem | 533.14 mi (858.01 km) |
