| Letterkenny to Lapua | 1,210.70 mi (1,948.44 km) |
| Letterkenny to Laukaa | 1,295.47 mi (2,084.85 km) |
| Letterkenny to Lauritsala | 1,362.88 mi (2,193.35 km) |
| Letterkenny to Lempaala | 1,214.50 mi (1,954.55 km) |
| Letterkenny to Leppavirta | 1,354.37 mi (2,179.65 km) |
| Letterkenny to Lieksa | 1,430.28 mi (2,301.82 km) |
| Letterkenny to Lieto | 1,164.84 mi (1,874.63 km) |
| Letterkenny to Liminka | 1,312.94 mi (2,112.97 km) |
| Letterkenny to Liperi | 1,405.30 mi (2,261.61 km) |
| Letterkenny to Lohja | 1,218.54 mi (1,961.05 km) |
| Letterkenny to Loimaa | 1,187.84 mi (1,911.64 km) |
| Letterkenny to Loviisa | 1,293.16 mi (2,081.14 km) |
| Letterkenny to Mantsala | 1,262.60 mi (2,031.95 km) |
| Letterkenny to Mariehamn | 1,076.16 mi (1,731.92 km) |
| Letterkenny to Masku | 1,153.53 mi (1,856.43 km) |
