| Boo to Ayamonte | 1,905.60 mi (3,066.77 km) |
| Boo to Azcoitia | 1,413.90 mi (2,275.45 km) |
| Boo to Azpeitia | 1,412.57 mi (2,273.31 km) |
| Boo to Azuqueca de Henares | 1,595.26 mi (2,567.33 km) |
| Boo to Badajoz | 1,792.95 mi (2,885.47 km) |
| Boo to Badalona | 1,414.60 mi (2,276.58 km) |
| Boo to Baena | 1,801.93 mi (2,899.93 km) |
| Boo to Baeza | 1,758.68 mi (2,830.33 km) |
| Boo to Bailen | 1,759.70 mi (2,831.97 km) |
| Boo to Balaguer | 1,423.09 mi (2,290.24 km) |
| Boo to Banolas | 1,360.15 mi (2,188.94 km) |
| Boo to Baranain | 1,420.13 mi (2,285.48 km) |
| Boo to Barbadanes | 1,618.62 mi (2,604.92 km) |
| Boo to Barbastro | 1,423.34 mi (2,290.64 km) |
| Boo to Barcelona | 1,418.99 mi (2,283.65 km) |
