| Portet-sur-Garonne to Leopoldsburg | 554.68 mi (892.67 km) |
| Portet-sur-Garonne to Lessines | 509.97 mi (820.71 km) |
| Portet-sur-Garonne to Leuven | 531.46 mi (855.31 km) |
| Portet-sur-Garonne to Lichtervelde | 525.22 mi (845.27 km) |
| Portet-sur-Garonne to Liedekerke | 522.72 mi (841.23 km) |
| Portet-sur-Garonne to Liege | 529.17 mi (851.62 km) |
| Portet-sur-Garonne to Lierre | 546.19 mi (879.01 km) |
| Portet-sur-Garonne to Lille | 556.25 mi (895.20 km) |
| Portet-sur-Garonne to Lint | 544.06 mi (875.57 km) |
| Portet-sur-Garonne to Lochristi | 535.72 mi (862.16 km) |
| Portet-sur-Garonne to Lokeren | 537.24 mi (864.61 km) |
| Portet-sur-Garonne to Lommel | 563.14 mi (906.28 km) |
| Portet-sur-Garonne to Londerzeel | 534.10 mi (859.54 km) |
| Portet-sur-Garonne to Louvain-la-Neuve | 514.54 mi (828.07 km) |
| Portet-sur-Garonne to Lovendegem | 533.52 mi (858.62 km) |
