| Irondale to Octeville | 4,290.98 mi (6,905.67 km) |
| Irondale to Oignies | 4,461.42 mi (7,179.96 km) |
| Irondale to Oissel | 4,412.63 mi (7,101.44 km) |
| Irondale to Olivet | 4,485.88 mi (7,219.33 km) |
| Irondale to Ollioules | 4,797.66 mi (7,721.09 km) |
| Irondale to Olonne-sur-Mer | 4,361.04 mi (7,018.42 km) |
| Irondale to Oloron-Sainte-Marie | 4,502.32 mi (7,245.79 km) |
| Irondale to Onet Village | 4,614.60 mi (7,426.48 km) |
| Irondale to Onnaing | 4,488.12 mi (7,222.93 km) |
| Irondale to Orange | 4,720.29 mi (7,596.57 km) |
| Irondale to Orchies | 4,471.43 mi (7,196.08 km) |
| Irondale to Orleans | 4,485.19 mi (7,218.22 km) |
| Irondale to Orly | 4,482.89 mi (7,214.51 km) |
| Irondale to Ormesson-sur-Marne | 4,487.85 mi (7,222.50 km) |
| Irondale to Orsay | 4,475.51 mi (7,202.63 km) |
