| Herouville-Saint-Clair to Opwijk | 233.99 mi (376.57 km) |
| Herouville-Saint-Clair to Ostend | 200.18 mi (322.16 km) |
| Herouville-Saint-Clair to Oud-Heverlee | 248.49 mi (399.90 km) |
| Herouville-Saint-Clair to Oud-Turnhout | 276.09 mi (444.33 km) |
| Herouville-Saint-Clair to Oudenaarde | 208.01 mi (334.75 km) |
| Herouville-Saint-Clair to Oudenburg | 200.78 mi (323.13 km) |
| Herouville-Saint-Clair to Oupeye | 284.83 mi (458.39 km) |
| Herouville-Saint-Clair to Overijse | 241.75 mi (389.06 km) |
| Herouville-Saint-Clair to Overpelt | 289.36 mi (465.68 km) |
| Herouville-Saint-Clair to Paal | 274.48 mi (441.74 km) |
| Herouville-Saint-Clair to Peer | 288.27 mi (463.92 km) |
| Herouville-Saint-Clair to Pepinster | 289.07 mi (465.22 km) |
| Herouville-Saint-Clair to Peruwelz | 196.25 mi (315.84 km) |
| Herouville-Saint-Clair to Perwez | 248.78 mi (400.37 km) |
| Herouville-Saint-Clair to Philippeville | 228.41 mi (367.60 km) |
