| Tredegar to Octeville | 164.21 mi (264.28 km) |
| Tredegar to Oignies | 284.96 mi (458.60 km) |
| Tredegar to Oissel | 253.85 mi (408.53 km) |
| Tredegar to Olivet | 354.29 mi (570.18 km) |
| Tredegar to Ollioules | 731.22 mi (1,176.79 km) |
| Tredegar to Olonne-sur-Mer | 368.16 mi (592.49 km) |
| Tredegar to Oloron-Sainte-Marie | 605.57 mi (974.56 km) |
| Tredegar to Onet Village | 578.19 mi (930.51 km) |
| Tredegar to Onnaing | 311.84 mi (501.86 km) |
| Tredegar to Orange | 645.18 mi (1,038.32 km) |
| Tredegar to Orchies | 295.15 mi (474.99 km) |
| Tredegar to Orleans | 352.45 mi (567.21 km) |
| Tredegar to Orly | 325.19 mi (523.34 km) |
| Tredegar to Ormesson-sur-Marne | 328.21 mi (528.20 km) |
| Tredegar to Orsay | 320.50 mi (515.79 km) |
