| Oldsmar to Octeville | 4,382.00 mi (7,052.15 km) |
| Oldsmar to Oignies | 4,566.94 mi (7,349.77 km) |
| Oldsmar to Oissel | 4,505.87 mi (7,251.50 km) |
| Oldsmar to Olivet | 4,568.80 mi (7,352.78 km) |
| Oldsmar to Ollioules | 4,852.55 mi (7,809.42 km) |
| Oldsmar to Olonne-sur-Mer | 4,426.42 mi (7,123.64 km) |
| Oldsmar to Oloron-Sainte-Marie | 4,542.89 mi (7,311.08 km) |
| Oldsmar to Onet Village | 4,671.38 mi (7,517.86 km) |
| Oldsmar to Onnaing | 4,594.06 mi (7,393.43 km) |
| Oldsmar to Orange | 4,780.30 mi (7,693.15 km) |
| Oldsmar to Orchies | 4,577.44 mi (7,366.67 km) |
| Oldsmar to Orleans | 4,568.44 mi (7,352.19 km) |
| Oldsmar to Orly | 4,573.70 mi (7,360.66 km) |
| Oldsmar to Ormesson-sur-Marne | 4,579.27 mi (7,369.62 km) |
| Oldsmar to Orsay | 4,565.58 mi (7,347.59 km) |
