| Montesilvano to Opwijk | 749.45 mi (1,206.13 km) |
| Montesilvano to Ostend | 800.51 mi (1,288.29 km) |
| Montesilvano to Oud-Heverlee | 728.49 mi (1,172.39 km) |
| Montesilvano to Oud-Turnhout | 745.12 mi (1,199.15 km) |
| Montesilvano to Oudenaarde | 761.23 mi (1,225.07 km) |
| Montesilvano to Oudenburg | 795.96 mi (1,280.97 km) |
| Montesilvano to Oupeye | 694.38 mi (1,117.50 km) |
| Montesilvano to Overijse | 729.80 mi (1,174.51 km) |
| Montesilvano to Overpelt | 728.08 mi (1,171.74 km) |
| Montesilvano to Paal | 725.05 mi (1,166.86 km) |
| Montesilvano to Peer | 722.52 mi (1,162.79 km) |
| Montesilvano to Pepinster | 681.99 mi (1,097.56 km) |
| Montesilvano to Peruwelz | 745.62 mi (1,199.97 km) |
| Montesilvano to Perwez | 713.38 mi (1,148.08 km) |
| Montesilvano to Philippeville | 699.95 mi (1,126.46 km) |
