| Sleaford to Cicero (Illinois) | 3,896.30 mi (6,270.49 km) |
| Sleaford to Cimarron Hills (Colorado) | 4,652.17 mi (7,486.94 km) |
| Sleaford to Cincinnati (Ohio) | 3,902.80 mi (6,280.95 km) |
| Sleaford to Cinco Ranch (Texas) | 4,813.66 mi (7,746.84 km) |
| Sleaford to Circleville (Ohio) | 3,819.93 mi (6,147.58 km) |
| Sleaford to Citrus (California) | 5,348.38 mi (8,607.38 km) |
| Sleaford to Citrus Heights (California) | 5,184.55 mi (8,343.72 km) |
| Sleaford to Citrus Park (Florida) | 4,377.90 mi (7,045.55 km) |
| Sleaford to Claiborne (Louisiana) | 4,529.83 mi (7,290.06 km) |
| Sleaford to Claremont (California) | 5,342.36 mi (8,597.70 km) |
| Sleaford to Claremont (New Hampshire) | 3,235.31 mi (5,206.73 km) |
| Sleaford to Claremore (Oklahoma) | 4,463.07 mi (7,182.62 km) |
| Sleaford to Clarksburg (Maryland) | 3,615.96 mi (5,819.33 km) |
| Sleaford to Clarksburg (West Virginia) | 3,733.53 mi (6,008.53 km) |
| Sleaford to Clarksdale (Mississippi) | 4,381.92 mi (7,052.03 km) |
