| Isselburg to Opwijk | 115.19 mi (185.39 km) |
| Isselburg to Ostend | 158.13 mi (254.48 km) |
| Isselburg to Oud-Heverlee | 103.96 mi (167.32 km) |
| Isselburg to Oud-Turnhout | 73.01 mi (117.50 km) |
| Isselburg to Oudenaarde | 141.13 mi (227.13 km) |
| Isselburg to Oudenburg | 155.68 mi (250.54 km) |
| Isselburg to Oupeye | 85.48 mi (137.57 km) |
| Isselburg to Overijse | 110.60 mi (178.00 km) |
| Isselburg to Overpelt | 62.06 mi (99.87 km) |
| Isselburg to Paal | 78.19 mi (125.84 km) |
| Isselburg to Peer | 65.12 mi (104.81 km) |
| Isselburg to Pepinster | 91.91 mi (147.92 km) |
| Isselburg to Peruwelz | 154.49 mi (248.63 km) |
| Isselburg to Perwez | 109.93 mi (176.91 km) |
| Isselburg to Philippeville | 140.25 mi (225.71 km) |
