| Ocna Mures to Opwijk | 948.29 mi (1,526.12 km) |
| Ocna Mures to Ostend | 1,005.60 mi (1,618.35 km) |
| Ocna Mures to Oud-Heverlee | 925.78 mi (1,489.90 km) |
| Ocna Mures to Oud-Turnhout | 919.96 mi (1,480.54 km) |
| Ocna Mures to Oudenaarde | 971.65 mi (1,563.72 km) |
| Ocna Mures to Oudenburg | 1,001.61 mi (1,611.93 km) |
| Ocna Mures to Oupeye | 882.25 mi (1,419.85 km) |
| Ocna Mures to Overijse | 930.78 mi (1,497.95 km) |
| Ocna Mures to Overpelt | 900.10 mi (1,448.57 km) |
| Ocna Mures to Paal | 907.40 mi (1,460.31 km) |
| Ocna Mures to Peer | 897.11 mi (1,443.76 km) |
| Ocna Mures to Pepinster | 872.71 mi (1,404.49 km) |
| Ocna Mures to Peruwelz | 968.40 mi (1,558.49 km) |
| Ocna Mures to Perwez | 916.53 mi (1,475.01 km) |
| Ocna Mures to Philippeville | 922.84 mi (1,485.17 km) |
