| Castro Valley to Boppard | 5,633.60 mi (9,066.41 km) |
| Castro Valley to Borgentreich | 5,604.41 mi (9,019.43 km) |
| Castro Valley to Borgholzhausen | 5,550.51 mi (8,932.69 km) |
| Castro Valley to Borken | 5,527.28 mi (8,895.29 km) |
| Castro Valley to Borna | 5,711.68 mi (9,192.06 km) |
| Castro Valley to Bornheim | 5,589.02 mi (8,994.66 km) |
| Castro Valley to Bosel | 5,492.19 mi (8,838.83 km) |
| Castro Valley to Bottrop | 5,545.43 mi (8,924.51 km) |
| Castro Valley to Bovenden | 5,620.40 mi (9,045.16 km) |
| Castro Valley to Brackenheim | 5,736.71 mi (9,232.35 km) |
| Castro Valley to Brake | 5,487.78 mi (8,831.73 km) |
| Castro Valley to Brakel | 5,594.41 mi (9,003.34 km) |
| Castro Valley to Bramsche | 5,525.93 mi (8,893.12 km) |
| Castro Valley to Brand | 5,566.59 mi (8,958.56 km) |
| Castro Valley to Brand-Erbisdorf | 5,745.97 mi (9,247.25 km) |
