| Duisburg to Octeville | 389.47 mi (626.79 km) |
| Duisburg to Oignies | 177.07 mi (284.96 km) |
| Duisburg to Oissel | 288.54 mi (464.36 km) |
| Duisburg to Olivet | 328.76 mi (529.08 km) |
| Duisburg to Ollioules | 574.74 mi (924.96 km) |
| Duisburg to Olonne-sur-Mer | 513.54 mi (826.46 km) |
| Duisburg to Oloron-Sainte-Marie | 665.07 mi (1,070.33 km) |
| Duisburg to Onet Village | 525.00 mi (844.90 km) |
| Duisburg to Onnaing | 155.66 mi (250.51 km) |
| Duisburg to Orange | 512.17 mi (824.25 km) |
| Duisburg to Orchies | 166.86 mi (268.53 km) |
| Duisburg to Orleans | 326.46 mi (525.38 km) |
| Duisburg to Orly | 268.40 mi (431.95 km) |
| Duisburg to Ormesson-sur-Marne | 261.70 mi (421.17 km) |
| Duisburg to Orsay | 277.25 mi (446.19 km) |
