| Hopa to Opwijk | 1,876.44 mi (3,019.83 km) |
| Hopa to Ostend | 1,932.78 mi (3,110.50 km) |
| Hopa to Oud-Heverlee | 1,854.51 mi (2,984.55 km) |
| Hopa to Oud-Turnhout | 1,844.81 mi (2,968.94 km) |
| Hopa to Oudenaarde | 1,900.94 mi (3,059.27 km) |
| Hopa to Oudenburg | 1,929.03 mi (3,104.47 km) |
| Hopa to Oupeye | 1,811.15 mi (2,914.76 km) |
| Hopa to Overijse | 1,859.94 mi (2,993.29 km) |
| Hopa to Overpelt | 1,825.33 mi (2,937.59 km) |
| Hopa to Paal | 1,834.26 mi (2,951.95 km) |
| Hopa to Peer | 1,822.99 mi (2,933.81 km) |
| Hopa to Pepinster | 1,802.44 mi (2,900.75 km) |
| Hopa to Peruwelz | 1,899.70 mi (3,057.27 km) |
| Hopa to Perwez | 1,846.55 mi (2,971.73 km) |
| Hopa to Philippeville | 1,855.44 mi (2,986.04 km) |
