| Weirton to Octeville | 3,727.12 mi (5,998.22 km) |
| Weirton to Oignies | 3,892.54 mi (6,264.43 km) |
| Weirton to Oissel | 3,847.63 mi (6,192.16 km) |
| Weirton to Olivet | 3,924.13 mi (6,315.28 km) |
| Weirton to Ollioules | 4,245.55 mi (6,832.56 km) |
| Weirton to Olonne-sur-Mer | 3,806.48 mi (6,125.94 km) |
| Weirton to Oloron-Sainte-Marie | 3,958.05 mi (6,369.86 km) |
| Weirton to Onet Village | 4,062.49 mi (6,537.94 km) |
| Weirton to Onnaing | 3,919.05 mi (6,307.10 km) |
| Weirton to Orange | 4,166.37 mi (6,705.13 km) |
| Weirton to Orchies | 3,902.39 mi (6,280.29 km) |
| Weirton to Orleans | 3,923.33 mi (6,313.99 km) |
| Weirton to Orly | 3,918.45 mi (6,306.14 km) |
| Weirton to Ormesson-sur-Marne | 3,923.21 mi (6,313.79 km) |
| Weirton to Orsay | 3,911.34 mi (6,294.70 km) |
