| Boston to Alenquer | 1,052.51 mi (1,693.86 km) |
| Boston to Alfena | 902.65 mi (1,452.68 km) |
| Boston to Alijo | 879.79 mi (1,415.89 km) |
| Boston to Aljustrel | 1,111.05 mi (1,788.06 km) |
| Boston to Almada | 1,079.10 mi (1,736.64 km) |
| Boston to Almargem | 1,070.50 mi (1,722.80 km) |
| Boston to Almeirim | 1,035.25 mi (1,666.07 km) |
| Boston to Amadora | 1,077.12 mi (1,733.45 km) |
| Boston to Amarante | 891.64 mi (1,434.96 km) |
| Boston to Amares | 874.69 mi (1,407.68 km) |
| Boston to Amora | 1,081.82 mi (1,741.02 km) |
| Boston to Anadia | 952.21 mi (1,532.44 km) |
| Boston to Angra do Heroismo | 1,624.70 mi (2,614.70 km) |
| Boston to Ansiao | 985.46 mi (1,585.95 km) |
| Boston to Anta | 919.36 mi (1,479.56 km) |
