| Merignac to Oignies | 424.14 mi (682.59 km) |
| Merignac to Oissel | 321.65 mi (517.65 km) |
| Merignac to Olivet | 241.66 mi (388.91 km) |
| Merignac to Ollioules | 343.22 mi (552.37 km) |
| Merignac to Olonne-sur-Mer | 129.33 mi (208.13 km) |
| Merignac to Oloron-Sainte-Marie | 113.63 mi (182.87 km) |
| Merignac to Onet Village | 162.56 mi (261.61 km) |
| Merignac to Onnaing | 431.15 mi (693.87 km) |
| Merignac to Orange | 273.06 mi (439.45 km) |
| Merignac to Orchies | 429.25 mi (690.81 km) |
| Merignac to Orleans | 244.15 mi (392.92 km) |
| Merignac to Orly | 305.62 mi (491.84 km) |
| Merignac to Ormesson-sur-Marne | 311.41 mi (501.16 km) |
| Merignac to Orsay | 298.38 mi (480.20 km) |
| Merignac to Orthez | 93.52 mi (150.51 km) |
