| Ronciglione to Opwijk | 709.46 mi (1,141.77 km) |
| Ronciglione to Ostend | 756.89 mi (1,218.09 km) |
| Ronciglione to Oud-Heverlee | 689.88 mi (1,110.25 km) |
| Ronciglione to Oud-Turnhout | 710.53 mi (1,143.49 km) |
| Ronciglione to Oudenaarde | 718.17 mi (1,155.78 km) |
| Ronciglione to Oudenburg | 752.41 mi (1,210.89 km) |
| Ronciglione to Oupeye | 659.72 mi (1,061.72 km) |
| Ronciglione to Overijse | 690.32 mi (1,110.96 km) |
| Ronciglione to Overpelt | 695.01 mi (1,118.51 km) |
| Ronciglione to Paal | 689.89 mi (1,110.28 km) |
| Ronciglione to Peer | 689.19 mi (1,109.15 km) |
| Ronciglione to Pepinster | 647.43 mi (1,041.94 km) |
| Ronciglione to Peruwelz | 700.60 mi (1,127.51 km) |
| Ronciglione to Perwez | 674.27 mi (1,085.14 km) |
| Ronciglione to Philippeville | 657.16 mi (1,057.60 km) |
