| Boom to Lagoa | 1,723.51 mi (2,773.71 km) |
| Boom to Lagos | 1,158.85 mi (1,864.99 km) |
| Boom to Lamego | 901.01 mi (1,450.04 km) |
| Boom to Leiria | 1,007.27 mi (1,621.05 km) |
| Boom to Lisbon | 1,076.49 mi (1,732.45 km) |
| Boom to Loule | 1,138.10 mi (1,831.59 km) |
| Boom to Loures | 1,070.75 mi (1,723.20 km) |
| Boom to Lourinha | 1,051.80 mi (1,692.71 km) |
| Boom to Lousa | 970.03 mi (1,561.11 km) |
| Boom to Lousada | 903.31 mi (1,453.74 km) |
| Boom to Macedo de Cavaleiros | 850.73 mi (1,369.12 km) |
| Boom to Mafamude | 924.93 mi (1,488.54 km) |
| Boom to Mafra | 1,069.47 mi (1,721.14 km) |
| Boom to Maia | 918.89 mi (1,478.81 km) |
| Boom to Mangualde | 927.54 mi (1,492.73 km) |
