| Serres to Leopoldsburg | 1,112.23 mi (1,789.96 km) |
| Serres to Lessines | 1,152.53 mi (1,854.82 km) |
| Serres to Leuven | 1,124.84 mi (1,810.25 km) |
| Serres to Lichtervelde | 1,189.70 mi (1,914.64 km) |
| Serres to Liedekerke | 1,147.77 mi (1,847.16 km) |
| Serres to Liege | 1,083.48 mi (1,743.70 km) |
| Serres to Lierre | 1,138.48 mi (1,832.21 km) |
| Serres to Lille | 1,132.05 mi (1,821.86 km) |
| Serres to Lint | 1,141.03 mi (1,836.32 km) |
| Serres to Lochristi | 1,165.04 mi (1,874.95 km) |
| Serres to Lokeren | 1,159.34 mi (1,865.78 km) |
| Serres to Lommel | 1,114.21 mi (1,793.14 km) |
| Serres to Londerzeel | 1,143.97 mi (1,841.03 km) |
| Serres to Louvain-la-Neuve | 1,125.17 mi (1,810.79 km) |
| Serres to Lovendegem | 1,173.93 mi (1,889.26 km) |
