| Calcinato to Octeville | 630.84 mi (1,015.24 km) |
| Calcinato to Oignies | 487.15 mi (783.99 km) |
| Calcinato to Oissel | 511.44 mi (823.08 km) |
| Calcinato to Olivet | 436.31 mi (702.17 km) |
| Calcinato to Ollioules | 276.85 mi (445.55 km) |
| Calcinato to Olonne-sur-Mer | 589.10 mi (948.06 km) |
| Calcinato to Oloron-Sainte-Marie | 566.24 mi (911.28 km) |
| Calcinato to Onet Village | 389.90 mi (627.48 km) |
| Calcinato to Onnaing | 463.98 mi (746.70 km) |
| Calcinato to Orange | 289.46 mi (465.84 km) |
| Calcinato to Orchies | 479.34 mi (771.43 km) |
| Calcinato to Orleans | 436.83 mi (703.01 km) |
| Calcinato to Orly | 439.98 mi (708.08 km) |
| Calcinato to Ormesson-sur-Marne | 435.54 mi (700.93 km) |
| Calcinato to Orsay | 446.82 mi (719.09 km) |
