| Adria to Octeville | 713.45 mi (1,148.19 km) |
| Adria to Oignies | 562.43 mi (905.14 km) |
| Adria to Oissel | 593.00 mi (954.34 km) |
| Adria to Olivet | 520.25 mi (837.26 km) |
| Adria to Ollioules | 334.81 mi (538.82 km) |
| Adria to Olonne-sur-Mer | 672.89 mi (1,082.91 km) |
| Adria to Oloron-Sainte-Marie | 640.01 mi (1,030.00 km) |
| Adria to Onet Village | 466.49 mi (750.74 km) |
| Adria to Onnaing | 538.24 mi (866.21 km) |
| Adria to Orange | 361.63 mi (581.98 km) |
| Adria to Orchies | 554.07 mi (891.69 km) |
| Adria to Orleans | 520.72 mi (838.01 km) |
| Adria to Orly | 521.96 mi (840.01 km) |
| Adria to Ormesson-sur-Marne | 517.27 mi (832.46 km) |
| Adria to Orsay | 529.08 mi (851.47 km) |
