| Sleaford to Carson (California) | 5,375.98 mi (8,651.80 km) |
| Sleaford to Carson City (Nevada) | 5,113.28 mi (8,229.03 km) |
| Sleaford to Carteret (New Jersey) | 3,433.11 mi (5,525.06 km) |
| Sleaford to Cartersville (Georgia) | 4,158.54 mi (6,692.52 km) |
| Sleaford to Carthage (Missouri) | 4,372.50 mi (7,036.86 km) |
| Sleaford to Cary (Illinois) | 3,896.85 mi (6,271.37 km) |
| Sleaford to Cary (North Carolina) | 3,841.12 mi (6,181.69 km) |
| Sleaford to Casa de Oro-Mount Helix (California) | 5,397.36 mi (8,686.22 km) |
| Sleaford to Casa Grande (Arizona) | 5,218.51 mi (8,398.39 km) |
| Sleaford to Casas Adobes (Arizona) | 5,224.92 mi (8,408.70 km) |
| Sleaford to Cascades (Virginia) | 3,629.07 mi (5,840.42 km) |
| Sleaford to Casper (Wyoming) | 4,493.47 mi (7,231.54 km) |
| Sleaford to Casselberry (Florida) | 4,297.14 mi (6,915.58 km) |
| Sleaford to Castaic (California) | 5,350.30 mi (8,610.47 km) |
| Sleaford to Castle Pines (Colorado) | 4,625.71 mi (7,444.37 km) |
