| Osimo to Octeville | 832.45 mi (1,339.70 km) |
| Osimo to Oignies | 689.79 mi (1,110.11 km) |
| Osimo to Oissel | 714.35 mi (1,149.64 km) |
| Osimo to Olivet | 634.93 mi (1,021.82 km) |
| Osimo to Ollioules | 384.52 mi (618.82 km) |
| Osimo to Olonne-sur-Mer | 773.10 mi (1,244.19 km) |
| Osimo to Oloron-Sainte-Marie | 707.49 mi (1,138.59 km) |
| Osimo to Onet Village | 544.93 mi (876.98 km) |
| Osimo to Onnaing | 666.05 mi (1,071.90 km) |
| Osimo to Orange | 434.62 mi (699.45 km) |
| Osimo to Orchies | 681.69 mi (1,097.07 km) |
| Osimo to Orleans | 635.67 mi (1,023.01 km) |
| Osimo to Orly | 642.65 mi (1,034.24 km) |
| Osimo to Ormesson-sur-Marne | 638.42 mi (1,027.43 km) |
| Osimo to Orsay | 649.18 mi (1,044.76 km) |
