| Hammersmith to Octeville | 143.19 mi (230.45 km) |
| Hammersmith to Oignies | 156.76 mi (252.27 km) |
| Hammersmith to Oissel | 159.47 mi (256.65 km) |
| Hammersmith to Olivet | 268.07 mi (431.42 km) |
| Hammersmith to Ollioules | 642.86 mi (1,034.58 km) |
| Hammersmith to Olonne-sur-Mer | 349.58 mi (562.60 km) |
| Hammersmith to Oloron-Sainte-Marie | 573.66 mi (923.21 km) |
| Hammersmith to Onet Village | 509.31 mi (819.65 km) |
| Hammersmith to Onnaing | 183.01 mi (294.53 km) |
| Hammersmith to Orange | 558.90 mi (899.46 km) |
| Hammersmith to Orchies | 166.39 mi (267.77 km) |
| Hammersmith to Orleans | 265.70 mi (427.61 km) |
| Hammersmith to Orly | 222.46 mi (358.01 km) |
| Hammersmith to Ormesson-sur-Marne | 223.42 mi (359.56 km) |
| Hammersmith to Orsay | 220.65 mi (355.10 km) |
