| Pontneddfechan to Octeville | 169.91 mi (273.44 km) |
| Pontneddfechan to Oignies | 298.87 mi (480.98 km) |
| Pontneddfechan to Oissel | 264.50 mi (425.68 km) |
| Pontneddfechan to Olivet | 363.37 mi (584.78 km) |
| Pontneddfechan to Ollioules | 739.47 mi (1,190.07 km) |
| Pontneddfechan to Olonne-sur-Mer | 369.80 mi (595.13 km) |
| Pontneddfechan to Oloron-Sainte-Marie | 607.55 mi (977.75 km) |
| Pontneddfechan to Onet Village | 584.47 mi (940.61 km) |
| Pontneddfechan to Onnaing | 325.81 mi (524.34 km) |
| Pontneddfechan to Orange | 653.32 mi (1,051.42 km) |
| Pontneddfechan to Orchies | 309.13 mi (497.49 km) |
| Pontneddfechan to Orleans | 361.59 mi (581.92 km) |
| Pontneddfechan to Orly | 336.14 mi (540.96 km) |
| Pontneddfechan to Ormesson-sur-Marne | 339.35 mi (546.14 km) |
| Pontneddfechan to Orsay | 331.17 mi (532.97 km) |
