| Pontypridd to Octeville | 155.46 mi (250.19 km) |
| Pontypridd to Oignies | 286.08 mi (460.40 km) |
| Pontypridd to Oissel | 249.71 mi (401.87 km) |
| Pontypridd to Olivet | 348.42 mi (560.74 km) |
| Pontypridd to Ollioules | 724.59 mi (1,166.11 km) |
| Pontypridd to Olonne-sur-Mer | 357.13 mi (574.75 km) |
| Pontypridd to Oloron-Sainte-Marie | 594.73 mi (957.12 km) |
| Pontypridd to Onet Village | 569.94 mi (917.23 km) |
| Pontypridd to Onnaing | 313.11 mi (503.90 km) |
| Pontypridd to Orange | 638.44 mi (1,027.48 km) |
| Pontypridd to Orchies | 296.44 mi (477.07 km) |
| Pontypridd to Orleans | 346.65 mi (557.87 km) |
| Pontypridd to Orly | 321.40 mi (517.24 km) |
| Pontypridd to Ormesson-sur-Marne | 324.67 mi (522.50 km) |
| Pontypridd to Orsay | 316.38 mi (509.16 km) |
