| Ordu to Octeville | 1,985.63 mi (3,195.56 km) |
| Ordu to Oignies | 1,785.86 mi (2,874.07 km) |
| Ordu to Oissel | 1,862.01 mi (2,996.61 km) |
| Ordu to Olivet | 1,820.04 mi (2,929.08 km) |
| Ordu to Ollioules | 1,640.05 mi (2,639.41 km) |
| Ordu to Olonne-sur-Mer | 1,993.95 mi (3,208.95 km) |
| Ordu to Oloron-Sainte-Marie | 1,962.04 mi (3,157.60 km) |
| Ordu to Onet Village | 1,793.76 mi (2,886.78 km) |
| Ordu to Onnaing | 1,758.73 mi (2,830.40 km) |
| Ordu to Orange | 1,685.69 mi (2,712.86 km) |
| Ordu to Orchies | 1,775.00 mi (2,856.59 km) |
| Ordu to Orleans | 1,819.73 mi (2,928.58 km) |
| Ordu to Orly | 1,800.38 mi (2,897.44 km) |
| Ordu to Ormesson-sur-Marne | 1,793.97 mi (2,887.12 km) |
| Ordu to Orsay | 1,809.52 mi (2,912.13 km) |
