| Montoro to Opwijk | 987.80 mi (1,589.70 km) |
| Montoro to Ostend | 979.59 mi (1,576.49 km) |
| Montoro to Oud-Heverlee | 990.03 mi (1,593.30 km) |
| Montoro to Oud-Turnhout | 1,025.83 mi (1,650.91 km) |
| Montoro to Oudenaarde | 968.87 mi (1,559.25 km) |
| Montoro to Oudenburg | 978.35 mi (1,574.50 km) |
| Montoro to Oupeye | 1,005.02 mi (1,617.42 km) |
| Montoro to Overijse | 984.13 mi (1,583.81 km) |
| Montoro to Overpelt | 1,029.46 mi (1,656.76 km) |
| Montoro to Paal | 1,013.49 mi (1,631.05 km) |
| Montoro to Peer | 1,025.36 mi (1,650.15 km) |
| Montoro to Pepinster | 1,001.06 mi (1,611.04 km) |
| Montoro to Peruwelz | 948.04 mi (1,525.73 km) |
| Montoro to Perwez | 980.86 mi (1,578.55 km) |
| Montoro to Philippeville | 949.73 mi (1,528.44 km) |
