| Chalco to Octeville | 4,310.73 mi (6,937.46 km) |
| Chalco to Oignies | 4,450.65 mi (7,162.64 km) |
| Chalco to Oissel | 4,424.40 mi (7,120.38 km) |
| Chalco to Olivet | 4,512.57 mi (7,262.28 km) |
| Chalco to Ollioules | 4,860.95 mi (7,822.95 km) |
| Chalco to Olonne-sur-Mer | 4,421.29 mi (7,115.38 km) |
| Chalco to Oloron-Sainte-Marie | 4,598.68 mi (7,400.86 km) |
| Chalco to Onet Village | 4,680.61 mi (7,532.71 km) |
| Chalco to Onnaing | 4,475.73 mi (7,202.99 km) |
| Chalco to Orange | 4,777.53 mi (7,688.69 km) |
| Chalco to Orchies | 4,459.51 mi (7,176.89 km) |
| Chalco to Orleans | 4,511.36 mi (7,260.34 km) |
| Chalco to Orly | 4,496.37 mi (7,236.21 km) |
| Chalco to Ormesson-sur-Marne | 4,500.15 mi (7,242.29 km) |
| Chalco to Orsay | 4,490.49 mi (7,226.75 km) |
