| Bostonia to Ayamonte | 5,807.11 mi (9,345.64 km) |
| Bostonia to Azcoitia | 5,760.54 mi (9,270.69 km) |
| Bostonia to Azpeitia | 5,762.17 mi (9,273.32 km) |
| Bostonia to Azuqueca de Henares | 5,837.57 mi (9,394.66 km) |
| Bostonia to Badajoz | 5,755.19 mi (9,262.08 km) |
| Bostonia to Badalona | 6,014.61 mi (9,679.57 km) |
| Bostonia to Baena | 5,922.56 mi (9,531.43 km) |
| Bostonia to Baeza | 5,942.53 mi (9,563.59 km) |
| Bostonia to Bailen | 5,925.53 mi (9,536.21 km) |
| Bostonia to Balaguer | 5,943.43 mi (9,565.03 km) |
| Bostonia to Banolas | 6,002.48 mi (9,660.06 km) |
| Bostonia to Baranain | 5,802.31 mi (9,337.91 km) |
| Bostonia to Barbadanes | 5,574.35 mi (8,971.04 km) |
| Bostonia to Barbastro | 5,906.04 mi (9,504.85 km) |
| Bostonia to Barcelona | 6,014.84 mi (9,679.95 km) |
