| Karlsfeld to Opwijk | 377.26 mi (607.15 km) |
| Karlsfeld to Ostend | 434.36 mi (699.03 km) |
| Karlsfeld to Oud-Heverlee | 354.33 mi (570.24 km) |
| Karlsfeld to Oud-Turnhout | 359.77 mi (579.00 km) |
| Karlsfeld to Oudenaarde | 396.63 mi (638.32 km) |
| Karlsfeld to Oudenburg | 429.95 mi (691.94 km) |
| Karlsfeld to Oupeye | 312.95 mi (503.65 km) |
| Karlsfeld to Overijse | 357.90 mi (575.98 km) |
| Karlsfeld to Overpelt | 340.42 mi (547.86 km) |
| Karlsfeld to Paal | 342.42 mi (551.06 km) |
| Karlsfeld to Peer | 335.80 mi (540.42 km) |
| Karlsfeld to Pepinster | 301.41 mi (485.08 km) |
| Karlsfeld to Peruwelz | 388.42 mi (625.11 km) |
| Karlsfeld to Perwez | 341.94 mi (550.30 km) |
| Karlsfeld to Philippeville | 340.79 mi (548.45 km) |
