| Clearlake to Octeville | 5,341.62 mi (8,596.51 km) |
| Clearlake to Oignies | 5,434.79 mi (8,746.44 km) |
| Clearlake to Oissel | 5,438.63 mi (8,752.63 km) |
| Clearlake to Olivet | 5,540.02 mi (8,915.80 km) |
| Clearlake to Ollioules | 5,913.79 mi (9,517.32 km) |
| Clearlake to Olonne-sur-Mer | 5,493.93 mi (8,841.63 km) |
| Clearlake to Oloron-Sainte-Marie | 5,703.33 mi (9,178.63 km) |
| Clearlake to Onet Village | 5,746.17 mi (9,247.57 km) |
| Clearlake to Onnaing | 5,456.18 mi (8,780.87 km) |
| Clearlake to Orange | 5,827.47 mi (9,378.41 km) |
| Clearlake to Orchies | 5,441.59 mi (8,757.39 km) |
| Clearlake to Orleans | 5,538.25 mi (8,912.95 km) |
| Clearlake to Orly | 5,508.42 mi (8,864.94 km) |
| Clearlake to Ormesson-sur-Marne | 5,510.49 mi (8,868.28 km) |
| Clearlake to Orsay | 5,504.76 mi (8,859.06 km) |
