| Ozarow Mazowiecki to Opwijk | 716.87 mi (1,153.70 km) |
| Ozarow Mazowiecki to Ostend | 766.42 mi (1,233.44 km) |
| Ozarow Mazowiecki to Oud-Heverlee | 698.60 mi (1,124.29 km) |
| Ozarow Mazowiecki to Oud-Turnhout | 677.80 mi (1,090.82 km) |
| Ozarow Mazowiecki to Oudenaarde | 743.47 mi (1,196.50 km) |
| Ozarow Mazowiecki to Oudenburg | 763.63 mi (1,228.95 km) |
| Ozarow Mazowiecki to Oupeye | 659.47 mi (1,061.32 km) |
| Ozarow Mazowiecki to Overijse | 705.10 mi (1,134.75 km) |
| Ozarow Mazowiecki to Overpelt | 660.86 mi (1,063.55 km) |
| Ozarow Mazowiecki to Paal | 673.84 mi (1,084.45 km) |
| Ozarow Mazowiecki to Peer | 660.53 mi (1,063.02 km) |
| Ozarow Mazowiecki to Pepinster | 654.73 mi (1,053.69 km) |
| Ozarow Mazowiecki to Peruwelz | 750.07 mi (1,207.12 km) |
| Ozarow Mazowiecki to Perwez | 696.00 mi (1,120.10 km) |
| Ozarow Mazowiecki to Philippeville | 715.46 mi (1,151.42 km) |
