| Sleaford to Cehegin | 1,031.86 mi (1,660.62 km) |
| Sleaford to Cervello | 809.05 mi (1,302.04 km) |
| Sleaford to Cervera | 786.75 mi (1,266.15 km) |
| Sleaford to Ceuti | 1,031.49 mi (1,660.02 km) |
| Sleaford to Cheste | 933.97 mi (1,503.09 km) |
| Sleaford to Chiclana de la Frontera | 1,178.71 mi (1,896.95 km) |
| Sleaford to Chipiona | 1,160.66 mi (1,867.90 km) |
| Sleaford to Chiva | 934.57 mi (1,504.05 km) |
| Sleaford to Churriana de la Vega | 1,105.90 mi (1,779.77 km) |
| Sleaford to Ciempozuelos | 899.67 mi (1,447.88 km) |
| Sleaford to Cieza | 1,020.73 mi (1,642.70 km) |
| Sleaford to Cisterniga | 810.91 mi (1,305.04 km) |
| Sleaford to Ciudad de Melilla | 1,230.12 mi (1,979.69 km) |
| Sleaford to Ciudad Real | 982.38 mi (1,580.99 km) |
| Sleaford to Ciudad-Rodrigo | 903.55 mi (1,454.13 km) |
