| Alpu to Opwijk | 1,499.83 mi (2,413.75 km) |
| Alpu to Ostend | 1,557.49 mi (2,506.53 km) |
| Alpu to Oud-Heverlee | 1,476.87 mi (2,376.79 km) |
| Alpu to Oud-Turnhout | 1,476.48 mi (2,376.16 km) |
| Alpu to Oudenaarde | 1,520.93 mi (2,447.70 km) |
| Alpu to Oudenburg | 1,553.22 mi (2,499.66 km) |
| Alpu to Oupeye | 1,434.00 mi (2,307.81 km) |
| Alpu to Overijse | 1,481.09 mi (2,383.58 km) |
| Alpu to Overpelt | 1,456.52 mi (2,344.05 km) |
| Alpu to Paal | 1,461.60 mi (2,352.21 km) |
| Alpu to Peer | 1,452.80 mi (2,338.06 km) |
| Alpu to Pepinster | 1,423.29 mi (2,290.57 km) |
| Alpu to Peruwelz | 1,514.05 mi (2,436.63 km) |
| Alpu to Perwez | 1,465.67 mi (2,358.77 km) |
| Alpu to Philippeville | 1,466.63 mi (2,360.32 km) |
