| South Portland to Leopoldsburg | 3,414.44 mi (5,495.02 km) |
| South Portland to Lessines | 3,367.70 mi (5,419.79 km) |
| South Portland to Leuven | 3,398.33 mi (5,469.08 km) |
| South Portland to Lichtervelde | 3,331.23 mi (5,361.10 km) |
| South Portland to Liedekerke | 3,373.90 mi (5,429.77 km) |
| South Portland to Liege | 3,439.93 mi (5,536.03 km) |
| South Portland to Lierre | 3,386.39 mi (5,449.87 km) |
| South Portland to Lille | 3,394.46 mi (5,462.85 km) |
| South Portland to Lint | 3,383.48 mi (5,445.18 km) |
| South Portland to Lochristi | 3,357.77 mi (5,403.82 km) |
| South Portland to Lokeren | 3,363.81 mi (5,413.53 km) |
| South Portland to Lommel | 3,413.79 mi (5,493.96 km) |
| South Portland to Londerzeel | 3,379.16 mi (5,438.23 km) |
| South Portland to Louvain-la-Neuve | 3,396.00 mi (5,465.33 km) |
| South Portland to Lovendegem | 3,348.38 mi (5,388.69 km) |
