| Karlsruhe to Opwijk | 231.13 mi (371.97 km) |
| Karlsruhe to Ostend | 287.11 mi (462.06 km) |
| Karlsruhe to Oud-Heverlee | 208.58 mi (335.68 km) |
| Karlsruhe to Oud-Turnhout | 219.82 mi (353.77 km) |
| Karlsruhe to Oudenaarde | 248.59 mi (400.06 km) |
| Karlsruhe to Oudenburg | 282.62 mi (454.83 km) |
| Karlsruhe to Oupeye | 169.99 mi (273.58 km) |
| Karlsruhe to Overijse | 211.39 mi (340.20 km) |
| Karlsruhe to Overpelt | 201.91 mi (324.95 km) |
| Karlsruhe to Paal | 200.58 mi (322.80 km) |
| Karlsruhe to Peer | 196.56 mi (316.33 km) |
| Karlsruhe to Pepinster | 157.78 mi (253.93 km) |
| Karlsruhe to Peruwelz | 238.98 mi (384.60 km) |
| Karlsruhe to Perwez | 195.03 mi (313.87 km) |
| Karlsruhe to Philippeville | 191.15 mi (307.62 km) |
