| Boulder to Benavente | 4,855.44 mi (7,814.07 km) |
| Boulder to Bombarral | 4,827.79 mi (7,769.58 km) |
| Boulder to Bougado | 4,770.03 mi (7,676.63 km) |
| Boulder to Braga | 4,767.35 mi (7,672.30 km) |
| Boulder to Braganca | 4,826.46 mi (7,767.43 km) |
| Boulder to Cabeceiras de Basto | 4,784.99 mi (7,700.70 km) |
| Boulder to Cacem | 4,841.28 mi (7,791.29 km) |
| Boulder to Cadaval | 4,831.60 mi (7,775.71 km) |
| Boulder to Caldas da Rainha | 4,823.02 mi (7,761.90 km) |
| Boulder to Calheta | 4,721.44 mi (7,598.42 km) |
| Boulder to Camara de Lobos | 4,731.61 mi (7,614.80 km) |
| Boulder to Canico | 4,739.85 mi (7,628.05 km) |
| Boulder to Cantanhede | 4,808.40 mi (7,738.38 km) |
| Boulder to Carregal do Sal | 4,830.21 mi (7,773.47 km) |
| Boulder to Cartaxo | 4,848.71 mi (7,803.24 km) |
