| Plymouth to Octeville | 122.33 mi (196.86 km) |
| Plymouth to Oignies | 314.09 mi (505.48 km) |
| Plymouth to Oissel | 243.68 mi (392.16 km) |
| Plymouth to Olivet | 323.41 mi (520.47 km) |
| Plymouth to Ollioules | 686.78 mi (1,105.27 km) |
| Plymouth to Olonne-sur-Mer | 286.34 mi (460.81 km) |
| Plymouth to Oloron-Sainte-Marie | 523.19 mi (841.99 km) |
| Plymouth to Onet Village | 520.65 mi (837.90 km) |
| Plymouth to Onnaing | 340.89 mi (548.61 km) |
| Plymouth to Orange | 600.61 mi (966.59 km) |
| Plymouth to Orchies | 325.10 mi (523.19 km) |
| Plymouth to Orleans | 322.22 mi (518.56 km) |
| Plymouth to Orly | 313.61 mi (504.70 km) |
| Plymouth to Ormesson-sur-Marne | 318.57 mi (512.69 km) |
| Plymouth to Orsay | 306.35 mi (493.02 km) |
