| Hennebont to Opwijk | 400.20 mi (644.05 km) |
| Hennebont to Ostend | 364.75 mi (587.00 km) |
| Hennebont to Oud-Heverlee | 414.24 mi (666.66 km) |
| Hennebont to Oud-Turnhout | 442.33 mi (711.86 km) |
| Hennebont to Oudenaarde | 374.24 mi (602.29 km) |
| Hennebont to Oudenburg | 365.72 mi (588.57 km) |
| Hennebont to Oupeye | 449.20 mi (722.92 km) |
| Hennebont to Overijse | 407.48 mi (655.78 km) |
| Hennebont to Overpelt | 455.39 mi (732.88 km) |
| Hennebont to Paal | 440.35 mi (708.67 km) |
| Hennebont to Peer | 454.14 mi (730.87 km) |
| Hennebont to Pepinster | 452.53 mi (728.28 km) |
| Hennebont to Peruwelz | 362.08 mi (582.71 km) |
| Hennebont to Perwez | 413.70 mi (665.79 km) |
| Hennebont to Philippeville | 391.31 mi (629.76 km) |
