| Cloppenburg to Opwijk | 209.94 mi (337.87 km) |
| Cloppenburg to Ostend | 245.16 mi (394.55 km) |
| Cloppenburg to Oud-Heverlee | 200.65 mi (322.91 km) |
| Cloppenburg to Oud-Turnhout | 167.84 mi (270.11 km) |
| Cloppenburg to Oudenaarde | 234.81 mi (377.89 km) |
| Cloppenburg to Oudenburg | 243.59 mi (392.02 km) |
| Cloppenburg to Oupeye | 180.21 mi (290.02 km) |
| Cloppenburg to Overijse | 207.20 mi (333.46 km) |
| Cloppenburg to Overpelt | 158.93 mi (255.77 km) |
| Cloppenburg to Paal | 175.10 mi (281.80 km) |
| Cloppenburg to Peer | 162.09 mi (260.86 km) |
| Cloppenburg to Pepinster | 184.45 mi (296.85 km) |
| Cloppenburg to Peruwelz | 250.13 mi (402.54 km) |
| Cloppenburg to Perwez | 206.87 mi (332.92 km) |
| Cloppenburg to Philippeville | 236.93 mi (381.30 km) |
