| Sleaford to Clacton-on-Sea | 106.02 mi (170.62 km) |
| Sleaford to Clay Cross | 43.08 mi (69.34 km) |
| Sleaford to Clayton | 79.24 mi (127.53 km) |
| Sleaford to Clayton le Moors | 97.43 mi (156.80 km) |
| Sleaford to Cleckheaton | 73.73 mi (118.66 km) |
| Sleaford to Cleethorpes | 41.77 mi (67.21 km) |
| Sleaford to Clevedon | 149.20 mi (240.11 km) |
| Sleaford to Clifton | 32.43 mi (52.20 km) |
| Sleaford to Clifton | 73.08 mi (117.62 km) |
| Sleaford to Cliftonville | 135.15 mi (217.51 km) |
| Sleaford to Clitheroe | 101.43 mi (163.23 km) |
| Sleaford to Clydebank | 256.65 mi (413.04 km) |
| Sleaford to Coalville | 44.09 mi (70.95 km) |
| Sleaford to Coatbridge | 245.53 mi (395.14 km) |
| Sleaford to Cobham | 115.18 mi (185.36 km) |
