| Enfield Lock to Octeville | 157.85 mi (254.03 km) |
| Enfield Lock to Oignies | 155.08 mi (249.58 km) |
| Enfield Lock to Oissel | 168.09 mi (270.51 km) |
| Enfield Lock to Olivet | 276.56 mi (445.07 km) |
| Enfield Lock to Ollioules | 649.65 mi (1,045.51 km) |
| Enfield Lock to Olonne-sur-Mer | 363.29 mi (584.66 km) |
| Enfield Lock to Oloron-Sainte-Marie | 586.15 mi (943.31 km) |
| Enfield Lock to Onet Village | 518.82 mi (834.96 km) |
| Enfield Lock to Onnaing | 180.62 mi (290.68 km) |
| Enfield Lock to Orange | 566.14 mi (911.12 km) |
| Enfield Lock to Orchies | 164.18 mi (264.22 km) |
| Enfield Lock to Orleans | 274.13 mi (441.17 km) |
| Enfield Lock to Orly | 228.61 mi (367.91 km) |
| Enfield Lock to Ormesson-sur-Marne | 229.14 mi (368.77 km) |
| Enfield Lock to Orsay | 227.38 mi (365.94 km) |
