| Sleaford to Corato | 1,132.90 mi (1,823.23 km) |
| Sleaford to Corbetta | 668.07 mi (1,075.15 km) |
| Sleaford to Corciano | 896.25 mi (1,442.38 km) |
| Sleaford to Cordenons | 760.30 mi (1,223.59 km) |
| Sleaford to Cori | 998.99 mi (1,607.72 km) |
| Sleaford to Coriano | 860.23 mi (1,384.41 km) |
| Sleaford to Corigliano Calabro | 1,222.52 mi (1,967.46 km) |
| Sleaford to Corleone | 1,237.24 mi (1,991.14 km) |
| Sleaford to Cormano | 670.52 mi (1,079.10 km) |
| Sleaford to Cornaredo | 669.50 mi (1,077.45 km) |
| Sleaford to Cornate d'Adda | 673.74 mi (1,084.28 km) |
| Sleaford to Cornedo Vicentino | 733.65 mi (1,180.70 km) |
| Sleaford to Correggio | 760.97 mi (1,224.67 km) |
| Sleaford to Corridonia | 927.56 mi (1,492.76 km) |
| Sleaford to Corsico | 675.60 mi (1,087.28 km) |
