| Northfleet to Opwijk | 169.54 mi (272.85 km) |
| Northfleet to Ostend | 112.32 mi (180.77 km) |
| Northfleet to Oud-Heverlee | 192.17 mi (309.27 km) |
| Northfleet to Oud-Turnhout | 200.40 mi (322.51 km) |
| Northfleet to Oudenaarde | 147.06 mi (236.66 km) |
| Northfleet to Oudenburg | 116.24 mi (187.07 km) |
| Northfleet to Oupeye | 235.65 mi (379.24 km) |
| Northfleet to Overijse | 187.44 mi (301.65 km) |
| Northfleet to Overpelt | 219.68 mi (353.53 km) |
| Northfleet to Paal | 210.84 mi (339.31 km) |
| Northfleet to Peer | 221.94 mi (357.19 km) |
| Northfleet to Pepinster | 245.58 mi (395.22 km) |
| Northfleet to Peruwelz | 154.82 mi (249.17 km) |
| Northfleet to Perwez | 202.42 mi (325.76 km) |
| Northfleet to Philippeville | 202.72 mi (326.24 km) |
