| Ilmenau to Lagoa | 1,989.52 mi (3,201.83 km) |
| Ilmenau to Lagos | 1,345.66 mi (2,165.63 km) |
| Ilmenau to Lamego | 1,112.65 mi (1,790.63 km) |
| Ilmenau to Leiria | 1,214.88 mi (1,955.16 km) |
| Ilmenau to Lisbon | 1,278.74 mi (2,057.94 km) |
| Ilmenau to Loule | 1,319.69 mi (2,123.83 km) |
| Ilmenau to Loures | 1,273.93 mi (2,050.20 km) |
| Ilmenau to Lourinha | 1,259.01 mi (2,026.17 km) |
| Ilmenau to Lousa | 1,176.44 mi (1,893.30 km) |
| Ilmenau to Lousada | 1,119.90 mi (1,802.31 km) |
| Ilmenau to Macedo de Cavaleiros | 1,059.74 mi (1,705.48 km) |
| Ilmenau to Mafamude | 1,142.50 mi (1,838.67 km) |
| Ilmenau to Mafra | 1,274.68 mi (2,051.40 km) |
| Ilmenau to Maia | 1,137.57 mi (1,830.74 km) |
| Ilmenau to Mangualde | 1,134.40 mi (1,825.63 km) |
