| Orta Nova to Opwijk | 862.65 mi (1,388.30 km) |
| Orta Nova to Ostend | 914.22 mi (1,471.29 km) |
| Orta Nova to Oud-Heverlee | 841.47 mi (1,354.22 km) |
| Orta Nova to Oud-Turnhout | 857.22 mi (1,379.56 km) |
| Orta Nova to Oudenaarde | 874.90 mi (1,408.02 km) |
| Orta Nova to Oudenburg | 909.67 mi (1,463.97 km) |
| Orta Nova to Oupeye | 806.63 mi (1,298.14 km) |
| Orta Nova to Overijse | 842.95 mi (1,356.59 km) |
| Orta Nova to Overpelt | 839.86 mi (1,351.63 km) |
| Orta Nova to Paal | 837.33 mi (1,347.55 km) |
| Orta Nova to Peer | 834.38 mi (1,342.81 km) |
| Orta Nova to Pepinster | 794.25 mi (1,278.21 km) |
| Orta Nova to Peruwelz | 859.58 mi (1,383.37 km) |
| Orta Nova to Perwez | 826.49 mi (1,330.10 km) |
| Orta Nova to Philippeville | 813.67 mi (1,309.48 km) |
