| Boston to Lagoa | 1,167.33 mi (1,878.63 km) |
| Boston to Lagoa | 1,611.32 mi (2,593.16 km) |
| Boston to Lagos | 1,173.10 mi (1,887.92 km) |
| Boston to Lamego | 897.35 mi (1,444.14 km) |
| Boston to Leiria | 1,003.24 mi (1,614.57 km) |
| Boston to Lisbon | 1,076.03 mi (1,731.70 km) |
| Boston to Loule | 1,158.87 mi (1,865.03 km) |
| Boston to Loures | 1,069.38 mi (1,721.00 km) |
| Boston to Lourinha | 1,046.27 mi (1,683.80 km) |
| Boston to Lousa | 969.31 mi (1,559.95 km) |
| Boston to Lousada | 892.94 mi (1,437.05 km) |
| Boston to Macedo de Cavaleiros | 853.51 mi (1,373.59 km) |
| Boston to Mafamude | 912.06 mi (1,467.82 km) |
| Boston to Mafra | 1,065.66 mi (1,715.02 km) |
| Boston to Maia | 904.84 mi (1,456.19 km) |
