| Dun Dealgan to Opwijk | 491.93 mi (791.69 km) |
| Dun Dealgan to Ostend | 435.40 mi (700.71 km) |
| Dun Dealgan to Oud-Heverlee | 514.80 mi (828.50 km) |
| Dun Dealgan to Oud-Turnhout | 511.48 mi (823.16 km) |
| Dun Dealgan to Oudenaarde | 474.07 mi (762.94 km) |
| Dun Dealgan to Oudenburg | 439.89 mi (707.94 km) |
| Dun Dealgan to Oupeye | 556.27 mi (895.23 km) |
| Dun Dealgan to Overijse | 511.47 mi (823.12 km) |
| Dun Dealgan to Overpelt | 531.36 mi (855.14 km) |
| Dun Dealgan to Paal | 527.41 mi (848.78 km) |
| Dun Dealgan to Peer | 535.35 mi (861.56 km) |
| Dun Dealgan to Pepinster | 567.68 mi (913.59 km) |
| Dun Dealgan to Peruwelz | 485.81 mi (781.84 km) |
| Dun Dealgan to Perwez | 527.66 mi (849.19 km) |
| Dun Dealgan to Philippeville | 533.41 mi (858.43 km) |
