| Sleaford to Carmona | 1,101.89 mi (1,773.32 km) |
| Sleaford to Cartagena | 1,064.11 mi (1,712.52 km) |
| Sleaford to Cartama | 1,143.46 mi (1,840.22 km) |
| Sleaford to Cartaya | 1,132.97 mi (1,823.34 km) |
| Sleaford to Caspe | 812.92 mi (1,308.26 km) |
| Sleaford to Cassa de la Selva | 782.40 mi (1,259.16 km) |
| Sleaford to Castalla | 994.97 mi (1,601.25 km) |
| Sleaford to Castellbisbal | 803.68 mi (1,293.40 km) |
| Sleaford to Castelldefels | 817.13 mi (1,315.04 km) |
| Sleaford to Castello de Ampurias | 759.24 mi (1,221.88 km) |
| Sleaford to Castellon de la Plana | 899.28 mi (1,447.26 km) |
| Sleaford to Castilleja de la Cuesta | 1,112.24 mi (1,789.98 km) |
| Sleaford to Catarroja | 939.20 mi (1,511.50 km) |
| Sleaford to Catral | 1,025.28 mi (1,650.03 km) |
| Sleaford to Caudete | 987.83 mi (1,589.76 km) |
