| Viadana to Octeville | 655.04 mi (1,054.18 km) |
| Viadana to Oignies | 518.28 mi (834.08 km) |
| Viadana to Oissel | 537.39 mi (864.85 km) |
| Viadana to Olivet | 457.78 mi (736.72 km) |
| Viadana to Ollioules | 262.88 mi (423.06 km) |
| Viadana to Olonne-sur-Mer | 602.55 mi (969.71 km) |
| Viadana to Oloron-Sainte-Marie | 564.78 mi (908.93 km) |
| Viadana to Onet Village | 391.40 mi (629.90 km) |
| Viadana to Onnaing | 495.70 mi (797.75 km) |
| Viadana to Orange | 286.41 mi (460.94 km) |
| Viadana to Orchies | 510.79 mi (822.04 km) |
| Viadana to Orleans | 458.48 mi (737.84 km) |
| Viadana to Orly | 465.57 mi (749.26 km) |
| Viadana to Ormesson-sur-Marne | 461.47 mi (742.67 km) |
| Viadana to Orsay | 471.97 mi (759.57 km) |
