| Sleaford to Benavente | 1,047.94 mi (1,686.50 km) |
| Sleaford to Bombarral | 1,034.96 mi (1,665.60 km) |
| Sleaford to Bougado | 890.47 mi (1,433.08 km) |
| Sleaford to Braga | 874.10 mi (1,406.73 km) |
| Sleaford to Braganca | 827.31 mi (1,331.43 km) |
| Sleaford to Cabeceiras de Basto | 867.38 mi (1,395.91 km) |
| Sleaford to Cacem | 1,070.03 mi (1,722.05 km) |
| Sleaford to Cadaval | 1,036.16 mi (1,667.54 km) |
| Sleaford to Caldas da Rainha | 1,025.60 mi (1,650.55 km) |
| Sleaford to Calheta | 1,628.46 mi (2,620.76 km) |
| Sleaford to Camara de Lobos | 1,625.65 mi (2,616.23 km) |
| Sleaford to Canico | 1,625.85 mi (2,616.55 km) |
| Sleaford to Cantanhede | 954.74 mi (1,536.51 km) |
| Sleaford to Carregal do Sal | 938.20 mi (1,509.89 km) |
| Sleaford to Cartaxo | 1,035.71 mi (1,666.82 km) |
