| Aire-sur-la-Lys to Opwijk | 81.24 mi (130.74 km) |
| Aire-sur-la-Lys to Ostend | 46.52 mi (74.87 km) |
| Aire-sur-la-Lys to Oud-Heverlee | 100.17 mi (161.20 km) |
| Aire-sur-la-Lys to Oud-Turnhout | 121.88 mi (196.15 km) |
| Aire-sur-la-Lys to Oudenaarde | 54.60 mi (87.87 km) |
| Aire-sur-la-Lys to Oudenburg | 45.90 mi (73.88 km) |
| Aire-sur-la-Lys to Oupeye | 142.22 mi (228.88 km) |
| Aire-sur-la-Lys to Overijse | 94.01 mi (151.30 km) |
| Aire-sur-la-Lys to Overpelt | 137.44 mi (221.19 km) |
| Aire-sur-la-Lys to Paal | 124.24 mi (199.95 km) |
| Aire-sur-la-Lys to Peer | 137.54 mi (221.35 km) |
| Aire-sur-la-Lys to Pepinster | 150.05 mi (241.48 km) |
| Aire-sur-la-Lys to Peruwelz | 52.74 mi (84.88 km) |
| Aire-sur-la-Lys to Perwez | 105.99 mi (170.57 km) |
| Aire-sur-la-Lys to Philippeville | 99.52 mi (160.16 km) |
