| Sleaford to Cabestany | 729.31 mi (1,173.71 km) |
| Sleaford to Cabries | 711.43 mi (1,144.94 km) |
| Sleaford to Cachan | 314.08 mi (505.47 km) |
| Sleaford to Caen | 263.67 mi (424.33 km) |
| Sleaford to Cagnes-sur-Mer | 731.43 mi (1,177.12 km) |
| Sleaford to Cahors | 596.60 mi (960.14 km) |
| Sleaford to Calais | 171.30 mi (275.69 km) |
| Sleaford to Caluire-et-Cuire | 550.53 mi (885.99 km) |
| Sleaford to Cambrai | 249.89 mi (402.16 km) |
| Sleaford to Canet-en-Roussillon | 728.25 mi (1,172.00 km) |
| Sleaford to Cannes | 735.60 mi (1,183.83 km) |
| Sleaford to Canteleu | 252.81 mi (406.86 km) |
| Sleaford to Capbreton | 647.98 mi (1,042.83 km) |
| Sleaford to Carcassonne | 687.92 mi (1,107.11 km) |
| Sleaford to Carmaux | 629.15 mi (1,012.52 km) |
