| South Portland to Legionowo | 3,971.22 mi (6,391.06 km) |
| South Portland to Legnica | 3,837.14 mi (6,175.28 km) |
| South Portland to Leszno | 3,831.80 mi (6,166.69 km) |
| South Portland to Lezajsk | 4,105.90 mi (6,607.80 km) |
| South Portland to Libiaz | 3,995.15 mi (6,429.57 km) |
| South Portland to Lidzbark | 3,902.94 mi (6,281.17 km) |
| South Portland to Lidzbark Warminski | 3,900.65 mi (6,277.50 km) |
| South Portland to Limanowa | 4,051.68 mi (6,520.55 km) |
| South Portland to Lipno | 3,893.37 mi (6,265.77 km) |
| South Portland to Lobez | 3,738.48 mi (6,016.51 km) |
| South Portland to Lodz | 3,940.97 mi (6,342.38 km) |
| South Portland to Lomianki | 3,973.59 mi (6,394.87 km) |
| South Portland to Lomza | 3,986.18 mi (6,415.13 km) |
| South Portland to Lowicz | 3,947.24 mi (6,352.47 km) |
| South Portland to Lubaczow | 4,135.61 mi (6,655.63 km) |
