| Sleaford to Ayamonte | 1,142.03 mi (1,837.92 km) |
| Sleaford to Azcoitia | 683.84 mi (1,100.54 km) |
| Sleaford to Azpeitia | 683.39 mi (1,099.82 km) |
| Sleaford to Azuqueca de Henares | 869.30 mi (1,399.00 km) |
| Sleaford to Badajoz | 1,023.94 mi (1,647.88 km) |
| Sleaford to Badalona | 808.35 mi (1,300.92 km) |
| Sleaford to Baena | 1,078.99 mi (1,736.47 km) |
| Sleaford to Baeza | 1,047.52 mi (1,685.82 km) |
| Sleaford to Bailen | 1,042.78 mi (1,678.18 km) |
| Sleaford to Balaguer | 776.30 mi (1,249.33 km) |
| Sleaford to Banolas | 765.78 mi (1,232.41 km) |
| Sleaford to Baranain | 706.84 mi (1,137.54 km) |
| Sleaford to Barbadanes | 816.12 mi (1,313.42 km) |
| Sleaford to Barbastro | 757.67 mi (1,219.35 km) |
| Sleaford to Barcelona | 811.44 mi (1,305.88 km) |
