| Grande-Synthe to Leopoldsburg | 128.41 mi (206.66 km) |
| Grande-Synthe to Lessines | 69.83 mi (112.38 km) |
| Grande-Synthe to Leuven | 104.73 mi (168.55 km) |
| Grande-Synthe to Lichtervelde | 36.12 mi (58.13 km) |
| Grande-Synthe to Liedekerke | 78.18 mi (125.82 km) |
| Grande-Synthe to Liege | 144.93 mi (233.24 km) |
| Grande-Synthe to Lierre | 98.62 mi (158.72 km) |
| Grande-Synthe to Lille | 110.77 mi (178.27 km) |
| Grande-Synthe to Lint | 94.94 mi (152.79 km) |
| Grande-Synthe to Lochristi | 66.73 mi (107.39 km) |
| Grande-Synthe to Lokeren | 73.22 mi (117.84 km) |
| Grande-Synthe to Lommel | 131.57 mi (211.74 km) |
| Grande-Synthe to Londerzeel | 86.83 mi (139.74 km) |
| Grande-Synthe to Louvain-la-Neuve | 98.82 mi (159.03 km) |
| Grande-Synthe to Lovendegem | 56.65 mi (91.17 km) |
