| Riccione Marina to Octeville | 777.86 mi (1,251.84 km) |
| Riccione Marina to Oignies | 635.43 mi (1,022.63 km) |
| Riccione Marina to Oissel | 659.58 mi (1,061.49 km) |
| Riccione Marina to Olivet | 580.76 mi (934.64 km) |
| Riccione Marina to Ollioules | 345.61 mi (556.21 km) |
| Riccione Marina to Olonne-sur-Mer | 721.76 mi (1,161.57 km) |
| Riccione Marina to Oloron-Sainte-Marie | 664.95 mi (1,070.13 km) |
| Riccione Marina to Onet Village | 498.60 mi (802.42 km) |
| Riccione Marina to Onnaing | 611.85 mi (984.68 km) |
| Riccione Marina to Orange | 389.19 mi (626.34 km) |
| Riccione Marina to Orchies | 627.42 mi (1,009.73 km) |
| Riccione Marina to Orleans | 581.47 mi (935.78 km) |
| Riccione Marina to Orly | 587.89 mi (946.13 km) |
| Riccione Marina to Ormesson-sur-Marne | 583.64 mi (939.28 km) |
| Riccione Marina to Orsay | 594.47 mi (956.70 km) |
