| Karlsdorf-Neuthard to Opwijk | 231.06 mi (371.86 km) |
| Karlsdorf-Neuthard to Ostend | 287.58 mi (462.82 km) |
| Karlsdorf-Neuthard to Oud-Heverlee | 208.32 mi (335.26 km) |
| Karlsdorf-Neuthard to Oud-Turnhout | 217.82 mi (350.54 km) |
| Karlsdorf-Neuthard to Oudenaarde | 249.41 mi (401.39 km) |
| Karlsdorf-Neuthard to Oudenburg | 283.13 mi (455.65 km) |
| Karlsdorf-Neuthard to Oupeye | 168.64 mi (271.40 km) |
| Karlsdorf-Neuthard to Overijse | 211.44 mi (340.29 km) |
| Karlsdorf-Neuthard to Overpelt | 199.48 mi (321.04 km) |
| Karlsdorf-Neuthard to Paal | 199.01 mi (320.27 km) |
| Karlsdorf-Neuthard to Peer | 194.28 mi (312.67 km) |
| Karlsdorf-Neuthard to Pepinster | 156.59 mi (252.01 km) |
| Karlsdorf-Neuthard to Peruwelz | 240.73 mi (387.42 km) |
| Karlsdorf-Neuthard to Perwez | 195.23 mi (314.19 km) |
| Karlsdorf-Neuthard to Philippeville | 193.10 mi (310.76 km) |
