| Klagenfurt to Ostend | 605.95 mi (975.18 km) |
| Klagenfurt to Oud-Heverlee | 526.29 mi (846.99 km) |
| Klagenfurt to Oud-Turnhout | 532.28 mi (856.63 km) |
| Klagenfurt to Oudenaarde | 567.80 mi (913.79 km) |
| Klagenfurt to Oudenburg | 601.50 mi (968.02 km) |
| Klagenfurt to Oupeye | 485.29 mi (781.00 km) |
| Klagenfurt to Overijse | 529.66 mi (852.41 km) |
| Klagenfurt to Overpelt | 512.92 mi (825.46 km) |
| Klagenfurt to Paal | 514.88 mi (828.61 km) |
| Klagenfurt to Peer | 508.31 mi (818.05 km) |
| Klagenfurt to Pepinster | 473.65 mi (762.26 km) |
| Klagenfurt to Peruwelz | 558.44 mi (898.73 km) |
| Klagenfurt to Perwez | 513.54 mi (826.47 km) |
| Klagenfurt to Philippeville | 510.58 mi (821.70 km) |
| Klagenfurt to Plombieres | 474.96 mi (764.37 km) |
