| Nizza Monferrato to Octeville | 576.02 mi (927.01 km) |
| Nizza Monferrato to Oignies | 465.71 mi (749.48 km) |
| Nizza Monferrato to Oissel | 464.88 mi (748.15 km) |
| Nizza Monferrato to Olivet | 374.52 mi (602.74 km) |
| Nizza Monferrato to Ollioules | 168.29 mi (270.84 km) |
| Nizza Monferrato to Olonne-sur-Mer | 503.63 mi (810.52 km) |
| Nizza Monferrato to Oloron-Sainte-Marie | 458.45 mi (737.80 km) |
| Nizza Monferrato to Onet Village | 284.93 mi (458.55 km) |
| Nizza Monferrato to Onnaing | 446.50 mi (718.58 km) |
| Nizza Monferrato to Orange | 180.27 mi (290.12 km) |
| Nizza Monferrato to Orchies | 459.90 mi (740.14 km) |
| Nizza Monferrato to Orleans | 375.63 mi (604.52 km) |
| Nizza Monferrato to Orly | 393.29 mi (632.94 km) |
| Nizza Monferrato to Ormesson-sur-Marne | 390.36 mi (628.22 km) |
| Nizza Monferrato to Orsay | 398.23 mi (640.89 km) |
