| Henley on Thames to Opwijk | 223.40 mi (359.53 km) |
| Henley on Thames to Ostend | 166.20 mi (267.48 km) |
| Henley on Thames to Oud-Heverlee | 245.99 mi (395.87 km) |
| Henley on Thames to Oud-Turnhout | 253.97 mi (408.73 km) |
| Henley on Thames to Oudenaarde | 200.62 mi (322.87 km) |
| Henley on Thames to Oudenburg | 170.12 mi (273.78 km) |
| Henley on Thames to Oupeye | 289.48 mi (465.87 km) |
| Henley on Thames to Overijse | 241.17 mi (388.13 km) |
| Henley on Thames to Overpelt | 273.36 mi (439.93 km) |
| Henley on Thames to Paal | 264.70 mi (425.99 km) |
| Henley on Thames to Peer | 275.72 mi (443.73 km) |
| Henley on Thames to Pepinster | 299.33 mi (481.72 km) |
| Henley on Thames to Peruwelz | 207.24 mi (333.53 km) |
| Henley on Thames to Perwez | 255.99 mi (411.98 km) |
| Henley on Thames to Philippeville | 254.98 mi (410.36 km) |
