| Cartagena to Octeville | 831.63 mi (1,338.37 km) |
| Cartagena to Oignies | 910.49 mi (1,465.30 km) |
| Cartagena to Oissel | 817.83 mi (1,316.18 km) |
| Cartagena to Olivet | 723.96 mi (1,165.09 km) |
| Cartagena to Ollioules | 524.71 mi (844.45 km) |
| Cartagena to Olonne-sur-Mer | 618.75 mi (995.78 km) |
| Cartagena to Oloron-Sainte-Marie | 387.02 mi (622.86 km) |
| Cartagena to Onet Village | 503.15 mi (809.74 km) |
| Cartagena to Onnaing | 911.95 mi (1,467.65 km) |
| Cartagena to Orange | 543.41 mi (874.53 km) |
| Cartagena to Orchies | 913.59 mi (1,470.29 km) |
| Cartagena to Orleans | 726.64 mi (1,169.42 km) |
| Cartagena to Orly | 788.31 mi (1,268.66 km) |
| Cartagena to Ormesson-sur-Marne | 792.71 mi (1,275.75 km) |
| Cartagena to Orsay | 783.08 mi (1,260.25 km) |
