| Le Portel to Oignies | 64.43 mi (103.69 km) |
| Le Portel to Oissel | 96.69 mi (155.61 km) |
| Le Portel to Olivet | 196.97 mi (316.99 km) |
| Le Portel to Ollioules | 560.15 mi (901.48 km) |
| Le Portel to Olonne-sur-Mer | 326.10 mi (524.80 km) |
| Le Portel to Oloron-Sainte-Marie | 529.08 mi (851.48 km) |
| Le Portel to Onet Village | 440.69 mi (709.23 km) |
| Le Portel to Onnaing | 91.58 mi (147.39 km) |
| Le Portel to Orange | 478.26 mi (769.69 km) |
| Le Portel to Orchies | 75.02 mi (120.74 km) |
| Le Portel to Orleans | 194.34 mi (312.76 km) |
| Le Portel to Orly | 140.47 mi (226.06 km) |
| Le Portel to Ormesson-sur-Marne | 139.54 mi (224.56 km) |
| Le Portel to Orsay | 141.47 mi (227.67 km) |
| Le Portel to Orthez | 510.73 mi (821.94 km) |
