| Castelo Branco to Bonita (California) | 5,704.51 mi (9,180.52 km) |
| Castelo Branco to Bonita Springs (Florida) | 4,278.37 mi (6,885.38 km) |
| Castelo Branco to Bonney Lake (Washington) | 5,210.90 mi (8,386.13 km) |
| Castelo Branco to Boone (Iowa) | 4,304.04 mi (6,926.69 km) |
| Castelo Branco to Boone (North Carolina) | 3,925.41 mi (6,317.33 km) |
| Castelo Branco to Borger (Texas) | 4,883.55 mi (7,859.31 km) |
| Castelo Branco to Bossier City (Louisiana) | 4,642.89 mi (7,472.00 km) |
| Castelo Branco to Boston (Massachusetts) | 3,237.81 mi (5,210.76 km) |
| Castelo Branco to Bostonia (California) | 5,693.79 mi (9,163.26 km) |
| Castelo Branco to Bothell (Washington) | 5,183.63 mi (8,342.25 km) |
| Castelo Branco to Bothell East (Washington) | 5,181.39 mi (8,338.64 km) |
| Castelo Branco to Bothell West (Washington) | 5,183.30 mi (8,341.71 km) |
| Castelo Branco to Boulder (Colorado) | 4,876.69 mi (7,848.28 km) |
| Castelo Branco to Boulder City (Nevada) | 5,467.80 mi (8,799.57 km) |
| Castelo Branco to Bound Brook (New Jersey) | 3,448.08 mi (5,549.15 km) |
