| Sleaford to Dixon (Illinois) | 3,959.94 mi (6,372.91 km) |
| Sleaford to Dobbs Ferry (New York) | 3,399.64 mi (5,471.19 km) |
| Sleaford to Doctor Phillips (Florida) | 4,315.06 mi (6,944.42 km) |
| Sleaford to Dodge City (Kansas) | 4,547.57 mi (7,318.60 km) |
| Sleaford to Dolton (Illinois) | 3,900.63 mi (6,277.46 km) |
| Sleaford to Donna (Texas) | 5,094.67 mi (8,199.08 km) |
| Sleaford to Dorado (Puerto Rico) | 4,207.40 mi (6,771.15 km) |
| Sleaford to Doral (Florida) | 4,404.33 mi (7,088.08 km) |
| Sleaford to Doraville (Georgia) | 4,150.44 mi (6,679.49 km) |
| Sleaford to Dothan (Alabama) | 4,330.59 mi (6,969.40 km) |
| Sleaford to Douglas (Arizona) | 5,229.52 mi (8,416.10 km) |
| Sleaford to Douglas (Georgia) | 4,214.55 mi (6,782.67 km) |
| Sleaford to Douglasville (Georgia) | 4,176.08 mi (6,720.76 km) |
| Sleaford to Dover (Delaware) | 3,549.50 mi (5,712.37 km) |
| Sleaford to Dover (New Hampshire) | 3,186.04 mi (5,127.44 km) |
