| Cities | Distance |
|---|---|
| Onex to Opwijk | 341.89 mi (550.21 km) |
| Onex to Ostend | 377.29 mi (607.19 km) |
| Onex to Oud-Heverlee | 327.90 mi (527.70 km) |
| Onex to Oud-Turnhout | 358.30 mi (576.63 km) |
| Onex to Oudenaarde | 342.08 mi (550.53 km) |
| Onex to Oudenburg | 373.20 mi (600.61 km) |
| Onex to Oupeye | 313.35 mi (504.28 km) |
| Onex to Overijse | 325.81 mi (524.34 km) |
| Onex to Overpelt | 349.16 mi (561.92 km) |
| Onex to Paal | 338.17 mi (544.22 km) |
| Onex to Peer | 343.24 mi (552.40 km) |
| Onex to Pepinster | 303.14 mi (487.86 km) |
| Onex to Peruwelz | 320.89 mi (516.42 km) |
| Onex to Perwez | 312.43 mi (502.80 km) |
| Onex to Philippeville | 286.55 mi (461.15 km) |