| Castelo Branco to Black Forest (Colorado) | 4,891.21 mi (7,871.64 km) |
| Castelo Branco to Blackfoot (Idaho) | 5,033.68 mi (8,100.93 km) |
| Castelo Branco to Blackhawk (California) | 5,654.86 mi (9,100.62 km) |
| Castelo Branco to Blacksburg (Virginia) | 3,832.05 mi (6,167.09 km) |
| Castelo Branco to Blackwells Mills (New Jersey) | 3,453.34 mi (5,557.62 km) |
| Castelo Branco to Blaine (Minnesota) | 4,170.00 mi (6,710.97 km) |
| Castelo Branco to Bloomingdale (Florida) | 4,246.07 mi (6,833.39 km) |
| Castelo Branco to Bloomingdale (Illinois) | 4,046.81 mi (6,512.71 km) |
| Castelo Branco to Bloomington (California) | 5,654.27 mi (9,099.67 km) |
| Castelo Branco to Bloomington (Illinois) | 4,134.99 mi (6,654.63 km) |
| Castelo Branco to Bloomington (Indiana) | 4,063.89 mi (6,540.20 km) |
| Castelo Branco to Bloomington (Minnesota) | 4,185.73 mi (6,736.28 km) |
| Castelo Branco to Bloomsburg (Pennsylvania) | 3,529.12 mi (5,679.57 km) |
| Castelo Branco to Blue Ash (Ohio) | 3,959.62 mi (6,372.39 km) |
| Castelo Branco to Blue Island (Illinois) | 4,037.39 mi (6,497.56 km) |
