| Boston to Argentona | 796.94 mi (1,282.56 km) |
| Boston to Arico el Nuevo | 1,907.83 mi (3,070.36 km) |
| Boston to Armilla | 1,106.96 mi (1,781.49 km) |
| Boston to Arnedo | 749.46 mi (1,206.13 km) |
| Boston to Arona | 1,917.79 mi (3,086.38 km) |
| Boston to Arrecife | 1,795.98 mi (2,890.35 km) |
| Boston to Arrigorriaga | 687.46 mi (1,106.36 km) |
| Boston to Arroyomolinos | 896.73 mi (1,443.15 km) |
| Boston to Arteijo | 773.12 mi (1,244.22 km) |
| Boston to Arucas | 1,891.14 mi (3,043.50 km) |
| Boston to Aspe | 1,011.35 mi (1,627.62 km) |
| Boston to Astorga | 778.24 mi (1,252.45 km) |
| Boston to Atarfe | 1,102.53 mi (1,774.36 km) |
| Boston to Avila | 879.10 mi (1,414.78 km) |
| Boston to Aviles | 704.21 mi (1,133.32 km) |
