| Saint-Martin-Boulogne to Leopoldsburg | 160.11 mi (257.67 km) |
| Saint-Martin-Boulogne to Lessines | 96.28 mi (154.95 km) |
| Saint-Martin-Boulogne to Leuven | 134.39 mi (216.27 km) |
| Saint-Martin-Boulogne to Lichtervelde | 68.80 mi (110.72 km) |
| Saint-Martin-Boulogne to Liedekerke | 107.48 mi (172.98 km) |
| Saint-Martin-Boulogne to Liege | 172.50 mi (277.61 km) |
| Saint-Martin-Boulogne to Lierre | 130.85 mi (210.58 km) |
| Saint-Martin-Boulogne to Lille | 143.58 mi (231.08 km) |
| Saint-Martin-Boulogne to Lint | 127.08 mi (204.51 km) |
| Saint-Martin-Boulogne to Lochristi | 99.31 mi (159.82 km) |
| Saint-Martin-Boulogne to Lokeren | 105.63 mi (169.99 km) |
| Saint-Martin-Boulogne to Lommel | 164.05 mi (264.01 km) |
| Saint-Martin-Boulogne to Londerzeel | 117.87 mi (189.69 km) |
| Saint-Martin-Boulogne to Louvain-la-Neuve | 125.57 mi (202.09 km) |
| Saint-Martin-Boulogne to Lovendegem | 89.53 mi (144.09 km) |
