| Houghton le Spring to Opwijk | 356.32 mi (573.44 km) |
| Houghton le Spring to Ostend | 309.10 mi (497.45 km) |
| Houghton le Spring to Oud-Heverlee | 376.87 mi (606.52 km) |
| Houghton le Spring to Oud-Turnhout | 361.66 mi (582.04 km) |
| Houghton le Spring to Oudenaarde | 347.33 mi (558.97 km) |
| Houghton le Spring to Oudenburg | 313.50 mi (504.53 km) |
| Houghton le Spring to Oupeye | 411.79 mi (662.71 km) |
| Houghton le Spring to Overijse | 375.79 mi (604.77 km) |
| Houghton le Spring to Overpelt | 379.89 mi (611.38 km) |
| Houghton le Spring to Paal | 381.09 mi (613.31 km) |
| Houghton le Spring to Peer | 385.08 mi (619.72 km) |
| Houghton le Spring to Pepinster | 424.13 mi (682.57 km) |
| Houghton le Spring to Peruwelz | 365.92 mi (588.88 km) |
| Houghton le Spring to Perwez | 392.12 mi (631.05 km) |
| Houghton le Spring to Philippeville | 408.15 mi (656.85 km) |
