| Sleaford to Cognac | 504.41 mi (811.77 km) |
| Sleaford to Cogolin | 744.65 mi (1,198.41 km) |
| Sleaford to Colmar | 480.80 mi (773.78 km) |
| Sleaford to Colombes | 304.29 mi (489.71 km) |
| Sleaford to Colomiers | 653.16 mi (1,051.15 km) |
| Sleaford to Combs-la-Ville | 325.77 mi (524.27 km) |
| Sleaford to Comines | 212.40 mi (341.83 km) |
| Sleaford to Compiegne | 284.27 mi (457.48 km) |
| Sleaford to Concarneau | 385.87 mi (620.99 km) |
| Sleaford to Conde-sur-l'Escaut | 245.55 mi (395.17 km) |
| Sleaford to Conflans-Sainte-Honorine | 296.91 mi (477.83 km) |
| Sleaford to Corbas | 559.64 mi (900.66 km) |
| Sleaford to Corbeil-Essonnes | 328.03 mi (527.92 km) |
| Sleaford to Cormeilles-en-Parisis | 300.21 mi (483.15 km) |
| Sleaford to Cosne sur Loire | 413.09 mi (664.80 km) |
