| Herceg Novi to Opwijk | 896.15 mi (1,442.22 km) |
| Herceg Novi to Ostend | 951.50 mi (1,531.29 km) |
| Herceg Novi to Oud-Heverlee | 873.67 mi (1,406.04 km) |
| Herceg Novi to Oud-Turnhout | 883.03 mi (1,421.10 km) |
| Herceg Novi to Oudenaarde | 912.50 mi (1,468.53 km) |
| Herceg Novi to Oudenburg | 946.97 mi (1,524.00 km) |
| Herceg Novi to Oupeye | 834.44 mi (1,342.91 km) |
| Herceg Novi to Overijse | 876.37 mi (1,410.38 km) |
| Herceg Novi to Overpelt | 864.12 mi (1,390.66 km) |
| Herceg Novi to Paal | 864.69 mi (1,391.59 km) |
| Herceg Novi to Peer | 859.21 mi (1,382.77 km) |
| Herceg Novi to Pepinster | 822.42 mi (1,323.56 km) |
| Herceg Novi to Peruwelz | 900.55 mi (1,449.30 km) |
| Herceg Novi to Perwez | 859.94 mi (1,383.94 km) |
| Herceg Novi to Philippeville | 852.89 mi (1,372.60 km) |
