| Calcinaia to Opwijk | 586.02 mi (943.11 km) |
| Calcinaia to Ostend | 632.41 mi (1,017.77 km) |
| Calcinaia to Oud-Heverlee | 566.93 mi (912.38 km) |
| Calcinaia to Oud-Turnhout | 588.91 mi (947.76 km) |
| Calcinaia to Oudenaarde | 593.90 mi (955.79 km) |
| Calcinaia to Oudenburg | 627.96 mi (1,010.60 km) |
| Calcinaia to Oupeye | 538.32 mi (866.35 km) |
| Calcinaia to Overijse | 567.09 mi (912.65 km) |
| Calcinaia to Overpelt | 574.06 mi (923.86 km) |
| Calcinaia to Paal | 568.15 mi (914.35 km) |
| Calcinaia to Peer | 568.17 mi (914.38 km) |
| Calcinaia to Pepinster | 526.14 mi (846.74 km) |
| Calcinaia to Peruwelz | 575.93 mi (926.87 km) |
| Calcinaia to Perwez | 551.22 mi (887.11 km) |
| Calcinaia to Philippeville | 533.11 mi (857.95 km) |
