| Sleaford to Los Llanos de Aridane | 1,903.05 mi (3,062.66 km) |
| Sleaford to Los Palacios y Villafranca | 1,125.71 mi (1,811.66 km) |
| Sleaford to Luanco | 693.51 mi (1,116.10 km) |
| Sleaford to Lucena | 1,095.20 mi (1,762.55 km) |
| Sleaford to Lugo | 763.47 mi (1,228.69 km) |
| Sleaford to Lumbreras | 1,068.40 mi (1,719.42 km) |
| Sleaford to Madrid | 882.76 mi (1,420.66 km) |
| Sleaford to Madridejos | 946.37 mi (1,523.04 km) |
| Sleaford to Mahon | 932.05 mi (1,499.98 km) |
| Sleaford to Mairena del Alcor | 1,109.76 mi (1,785.98 km) |
| Sleaford to Mairena del Aljarafe | 1,115.81 mi (1,795.73 km) |
| Sleaford to Majadahonda | 880.37 mi (1,416.82 km) |
| Sleaford to Malaga | 1,141.14 mi (1,836.49 km) |
| Sleaford to Malgrat de Mar | 797.84 mi (1,284.00 km) |
| Sleaford to Manacor | 943.32 mi (1,518.12 km) |
