| Cities | Distance |
|---|---|
| Hertford to Opwijk | 192.44 mi (309.70 km) |
| Hertford to Ostend | 134.75 mi (216.87 km) |
| Hertford to Oud-Heverlee | 215.37 mi (346.61 km) |
| Hertford to Oud-Turnhout | 219.87 mi (353.84 km) |
| Hertford to Oudenaarde | 171.70 mi (276.33 km) |
| Hertford to Oudenburg | 139.00 mi (223.69 km) |
| Hertford to Oupeye | 258.48 mi (415.98 km) |
| Hertford to Overijse | 211.13 mi (339.77 km) |
| Hertford to Overpelt | 239.59 mi (385.58 km) |
| Hertford to Paal | 232.14 mi (373.60 km) |
| Hertford to Peer | 242.40 mi (390.10 km) |
| Hertford to Pepinster | 268.96 mi (432.85 km) |
| Hertford to Peruwelz | 181.59 mi (292.24 km) |
| Hertford to Perwez | 226.68 mi (364.80 km) |
| Hertford to Philippeville | 229.41 mi (369.20 km) |