| Cittadella to Opwijk | 506.37 mi (814.92 km) |
| Cittadella to Ostend | 559.19 mi (899.93 km) |
| Cittadella to Oud-Heverlee | 484.84 mi (780.28 km) |
| Cittadella to Oud-Turnhout | 499.84 mi (804.41 km) |
| Cittadella to Oudenaarde | 519.84 mi (836.61 km) |
| Cittadella to Oudenburg | 554.63 mi (892.59 km) |
| Cittadella to Oupeye | 449.31 mi (723.10 km) |
| Cittadella to Overijse | 486.58 mi (783.08 km) |
| Cittadella to Overpelt | 482.44 mi (776.41 km) |
| Cittadella to Paal | 480.02 mi (772.53 km) |
| Cittadella to Peer | 476.96 mi (767.59 km) |
| Cittadella to Pepinster | 436.94 mi (703.19 km) |
| Cittadella to Peruwelz | 505.75 mi (813.93 km) |
| Cittadella to Perwez | 470.08 mi (756.52 km) |
| Cittadella to Philippeville | 458.95 mi (738.60 km) |
