| Boston to Benavente | 1,053.78 mi (1,695.90 km) |
| Boston to Bombarral | 1,041.17 mi (1,675.60 km) |
| Boston to Bougado | 897.07 mi (1,443.70 km) |
| Boston to Braga | 880.69 mi (1,417.33 km) |
| Boston to Braganca | 832.57 mi (1,339.89 km) |
| Boston to Cabeceiras de Basto | 873.62 mi (1,405.95 km) |
| Boston to Cacem | 1,076.18 mi (1,731.94 km) |
| Boston to Cadaval | 1,042.32 mi (1,677.46 km) |
| Boston to Caldas da Rainha | 1,031.85 mi (1,660.60 km) |
| Boston to Calheta | 1,637.22 mi (2,634.86 km) |
| Boston to Camara de Lobos | 1,634.32 mi (2,630.18 km) |
| Boston to Canico | 1,634.44 mi (2,630.38 km) |
| Boston to Cantanhede | 960.94 mi (1,546.49 km) |
| Boston to Carregal do Sal | 943.97 mi (1,519.17 km) |
| Boston to Cartaxo | 1,041.61 mi (1,676.31 km) |
