| Overlea to Octeville | 3,601.82 mi (5,796.57 km) |
| Overlea to Oignies | 3,774.99 mi (6,075.26 km) |
| Overlea to Oissel | 3,723.92 mi (5,993.07 km) |
| Overlea to Olivet | 3,795.84 mi (6,108.81 km) |
| Overlea to Ollioules | 4,105.98 mi (6,607.93 km) |
| Overlea to Olonne-sur-Mer | 3,669.56 mi (5,905.58 km) |
| Overlea to Oloron-Sainte-Marie | 3,810.96 mi (6,133.15 km) |
| Overlea to Onet Village | 3,922.92 mi (6,313.33 km) |
| Overlea to Onnaing | 3,801.81 mi (6,118.43 km) |
| Overlea to Orange | 4,028.70 mi (6,483.57 km) |
| Overlea to Orchies | 3,785.12 mi (6,091.56 km) |
| Overlea to Orleans | 3,795.19 mi (6,107.76 km) |
| Overlea to Orly | 3,793.88 mi (6,105.65 km) |
| Overlea to Ormesson-sur-Marne | 3,798.93 mi (6,113.79 km) |
| Overlea to Orsay | 3,786.38 mi (6,093.59 km) |
