| Halstenbek to Opwijk | 301.54 mi (485.28 km) |
| Halstenbek to Ostend | 335.36 mi (539.71 km) |
| Halstenbek to Oud-Heverlee | 291.93 mi (469.82 km) |
| Halstenbek to Oud-Turnhout | 259.42 mi (417.50 km) |
| Halstenbek to Oudenaarde | 326.33 mi (525.18 km) |
| Halstenbek to Oudenburg | 334.02 mi (537.55 km) |
| Halstenbek to Oupeye | 269.04 mi (432.98 km) |
| Halstenbek to Overijse | 298.54 mi (480.45 km) |
| Halstenbek to Overpelt | 250.06 mi (402.43 km) |
| Halstenbek to Paal | 266.18 mi (428.38 km) |
| Halstenbek to Peer | 252.95 mi (407.09 km) |
| Halstenbek to Pepinster | 271.97 mi (437.69 km) |
| Halstenbek to Peruwelz | 341.70 mi (549.92 km) |
| Halstenbek to Perwez | 297.54 mi (478.84 km) |
| Halstenbek to Philippeville | 327.01 mi (526.27 km) |
