| London to Octeville | 145.95 mi (234.88 km) |
| London to Oignies | 153.51 mi (247.05 km) |
| London to Oissel | 158.93 mi (255.78 km) |
| London to Olivet | 267.53 mi (430.54 km) |
| London to Ollioules | 641.79 mi (1,032.86 km) |
| London to Olonne-sur-Mer | 351.44 mi (565.59 km) |
| London to Oloron-Sainte-Marie | 574.81 mi (925.06 km) |
| London to Onet Village | 509.16 mi (819.42 km) |
| London to Onnaing | 179.65 mi (289.12 km) |
| London to Orange | 557.97 mi (897.97 km) |
| London to Orchies | 163.05 mi (262.40 km) |
| London to Orleans | 265.14 mi (426.70 km) |
| London to Orly | 221.14 mi (355.89 km) |
| London to Ormesson-sur-Marne | 221.97 mi (357.23 km) |
| London to Orsay | 219.51 mi (353.27 km) |
