| Clondalkin to Opwijk | 476.54 mi (766.92 km) |
| Clondalkin to Ostend | 419.15 mi (674.56 km) |
| Clondalkin to Oud-Heverlee | 499.53 mi (803.92 km) |
| Clondalkin to Oud-Turnhout | 499.47 mi (803.82 km) |
| Clondalkin to Oudenaarde | 456.89 mi (735.30 km) |
| Clondalkin to Oudenburg | 423.53 mi (681.61 km) |
| Clondalkin to Oupeye | 541.98 mi (872.24 km) |
| Clondalkin to Overijse | 495.68 mi (797.73 km) |
| Clondalkin to Overpelt | 519.44 mi (835.96 km) |
| Clondalkin to Paal | 514.12 mi (827.40 km) |
| Clondalkin to Peer | 523.02 mi (841.72 km) |
| Clondalkin to Pepinster | 552.96 mi (889.90 km) |
| Clondalkin to Peruwelz | 466.73 mi (751.13 km) |
| Clondalkin to Perwez | 511.53 mi (823.23 km) |
| Clondalkin to Philippeville | 514.62 mi (828.20 km) |
