| Isbergues to Opwijk | 79.05 mi (127.22 km) |
| Isbergues to Ostend | 46.25 mi (74.43 km) |
| Isbergues to Oud-Heverlee | 97.74 mi (157.29 km) |
| Isbergues to Oud-Turnhout | 119.91 mi (192.98 km) |
| Isbergues to Oudenaarde | 52.39 mi (84.31 km) |
| Isbergues to Oudenburg | 45.36 mi (73.00 km) |
| Isbergues to Oupeye | 139.66 mi (224.76 km) |
| Isbergues to Overijse | 91.54 mi (147.32 km) |
| Isbergues to Overpelt | 135.28 mi (217.71 km) |
| Isbergues to Paal | 121.96 mi (196.27 km) |
| Isbergues to Peer | 135.30 mi (217.75 km) |
| Isbergues to Pepinster | 147.41 mi (237.23 km) |
| Isbergues to Peruwelz | 49.98 mi (80.44 km) |
| Isbergues to Perwez | 103.37 mi (166.36 km) |
| Isbergues to Philippeville | 96.69 mi (155.62 km) |
