| Ostroleka to Opwijk | 751.31 mi (1,209.12 km) |
| Ostroleka to Ostend | 798.44 mi (1,284.96 km) |
| Ostroleka to Oud-Heverlee | 734.21 mi (1,181.59 km) |
| Ostroleka to Oud-Turnhout | 711.06 mi (1,144.34 km) |
| Ostroleka to Oudenaarde | 777.97 mi (1,252.03 km) |
| Ostroleka to Oudenburg | 795.93 mi (1,280.92 km) |
| Ostroleka to Oupeye | 696.75 mi (1,121.30 km) |
| Ostroleka to Overijse | 740.83 mi (1,192.25 km) |
| Ostroleka to Overpelt | 695.07 mi (1,118.61 km) |
| Ostroleka to Paal | 708.82 mi (1,140.74 km) |
| Ostroleka to Peer | 695.25 mi (1,118.90 km) |
| Ostroleka to Pepinster | 692.96 mi (1,115.22 km) |
| Ostroleka to Peruwelz | 786.21 mi (1,265.28 km) |
| Ostroleka to Perwez | 732.84 mi (1,179.40 km) |
| Ostroleka to Philippeville | 754.15 mi (1,213.69 km) |
