| Cities | Distance |
|---|---|
| Sleaford to Opwijk | 240.59 mi (387.19 km) |
| Sleaford to Ostend | 186.93 mi (300.83 km) |
| Sleaford to Oud-Heverlee | 262.96 mi (423.19 km) |
| Sleaford to Oud-Turnhout | 256.40 mi (412.64 km) |
| Sleaford to Oudenaarde | 226.27 mi (364.15 km) |
| Sleaford to Oudenburg | 191.48 mi (308.16 km) |
| Sleaford to Oupeye | 302.82 mi (487.34 km) |
| Sleaford to Overijse | 260.41 mi (419.09 km) |
| Sleaford to Overpelt | 276.14 mi (444.41 km) |
| Sleaford to Paal | 273.19 mi (439.66 km) |
| Sleaford to Peer | 280.36 mi (451.20 km) |
| Sleaford to Pepinster | 314.61 mi (506.32 km) |
| Sleaford to Peruwelz | 241.92 mi (389.33 km) |
| Sleaford to Perwez | 276.90 mi (445.62 km) |
| Sleaford to Philippeville | 287.44 mi (462.59 km) |