| Altenburg to Opwijk | 358.73 mi (577.31 km) |
| Altenburg to Ostend | 412.79 mi (664.32 km) |
| Altenburg to Oud-Heverlee | 338.37 mi (544.56 km) |
| Altenburg to Oud-Turnhout | 323.56 mi (520.72 km) |
| Altenburg to Oudenaarde | 384.65 mi (619.04 km) |
| Altenburg to Oudenburg | 409.38 mi (658.83 km) |
| Altenburg to Oupeye | 296.74 mi (477.55 km) |
| Altenburg to Overijse | 344.48 mi (554.39 km) |
| Altenburg to Overpelt | 304.74 mi (490.42 km) |
| Altenburg to Paal | 315.51 mi (507.77 km) |
| Altenburg to Peer | 303.16 mi (487.89 km) |
| Altenburg to Pepinster | 290.43 mi (467.40 km) |
| Altenburg to Peruwelz | 387.99 mi (624.41 km) |
| Altenburg to Perwez | 333.43 mi (536.61 km) |
| Altenburg to Philippeville | 349.83 mi (563.00 km) |
