| Monsummano to Opwijk | 579.84 mi (933.16 km) |
| Monsummano to Ostend | 627.07 mi (1,009.17 km) |
| Monsummano to Oud-Heverlee | 560.42 mi (901.91 km) |
| Monsummano to Oud-Turnhout | 581.67 mi (936.10 km) |
| Monsummano to Oudenaarde | 588.37 mi (946.88 km) |
| Monsummano to Oudenburg | 622.59 mi (1,001.97 km) |
| Monsummano to Oupeye | 530.95 mi (854.48 km) |
| Monsummano to Overijse | 560.76 mi (902.46 km) |
| Monsummano to Overpelt | 566.49 mi (911.67 km) |
| Monsummano to Paal | 560.96 mi (902.78 km) |
| Monsummano to Peer | 560.63 mi (902.25 km) |
| Monsummano to Pepinster | 518.71 mi (834.78 km) |
| Monsummano to Peruwelz | 570.78 mi (918.59 km) |
| Monsummano to Perwez | 544.78 mi (876.73 km) |
| Monsummano to Philippeville | 527.38 mi (848.74 km) |
