| Sleaford to Chivasso | 656.21 mi (1,056.07 km) |
| Sleaford to Ciampino | 981.11 mi (1,578.95 km) |
| Sleaford to Cicciano | 1,085.15 mi (1,746.38 km) |
| Sleaford to Cingoli | 911.86 mi (1,467.49 km) |
| Sleaford to Cinisello Balsamo | 671.96 mi (1,081.42 km) |
| Sleaford to Cinisi | 1,210.76 mi (1,948.54 km) |
| Sleaford to Cirie | 646.32 mi (1,040.15 km) |
| Sleaford to Ciro Marina | 1,254.39 mi (2,018.75 km) |
| Sleaford to Cislago | 659.23 mi (1,060.92 km) |
| Sleaford to Cisterna di Latina | 999.67 mi (1,608.81 km) |
| Sleaford to Cisternino | 1,188.93 mi (1,913.40 km) |
| Sleaford to Citta di Castello | 876.88 mi (1,411.20 km) |
| Sleaford to Citta Sant'Angelo | 984.08 mi (1,583.73 km) |
| Sleaford to Cittadella | 746.02 mi (1,200.61 km) |
| Sleaford to Cittanova | 1,281.29 mi (2,062.04 km) |
