| Duncanville to Octeville | 4,756.78 mi (7,655.30 km) |
| Duncanville to Oignies | 4,912.76 mi (7,906.32 km) |
| Duncanville to Oissel | 4,875.14 mi (7,845.78 km) |
| Duncanville to Olivet | 4,956.14 mi (7,976.14 km) |
| Duncanville to Ollioules | 5,286.80 mi (8,508.28 km) |
| Duncanville to Olonne-sur-Mer | 4,846.54 mi (7,799.75 km) |
| Duncanville to Oloron-Sainte-Marie | 5,004.68 mi (8,054.25 km) |
| Duncanville to Onet Village | 5,104.06 mi (8,214.20 km) |
| Duncanville to Onnaing | 4,938.76 mi (7,948.16 km) |
| Duncanville to Orange | 5,206.26 mi (8,378.67 km) |
| Duncanville to Orchies | 4,922.23 mi (7,921.56 km) |
| Duncanville to Orleans | 4,955.20 mi (7,974.62 km) |
| Duncanville to Orly | 4,946.63 mi (7,960.83 km) |
| Duncanville to Ormesson-sur-Marne | 4,951.03 mi (7,967.92 km) |
| Duncanville to Orsay | 4,939.96 mi (7,950.09 km) |
