| Sleaford to Denizli | 1,756.08 mi (2,826.14 km) |
| Sleaford to Derecik | 2,393.82 mi (3,852.48 km) |
| Sleaford to Dereli | 1,989.81 mi (3,202.30 km) |
| Sleaford to Derik | 2,215.69 mi (3,565.81 km) |
| Sleaford to Derinkuyu | 1,946.13 mi (3,132.00 km) |
| Sleaford to Develi | 1,975.63 mi (3,179.47 km) |
| Sleaford to Dicle | 2,161.25 mi (3,478.20 km) |
| Sleaford to Digor | 2,210.44 mi (3,557.36 km) |
| Sleaford to Dikili | 1,608.75 mi (2,589.04 km) |
| Sleaford to Divrigi | 2,036.80 mi (3,277.91 km) |
| Sleaford to Diyadin | 2,257.43 mi (3,632.99 km) |
| Sleaford to Diyarbakir | 2,189.31 mi (3,523.35 km) |
| Sleaford to Doganhisar | 1,836.86 mi (2,956.14 km) |
| Sleaford to Dogansehir | 2,085.06 mi (3,355.59 km) |
| Sleaford to Dogubayazit | 2,273.91 mi (3,659.51 km) |
