| Le Mont-sur-Lausanne to Octeville | 437.59 mi (704.24 km) |
| Le Mont-sur-Lausanne to Oignies | 319.39 mi (514.00 km) |
| Le Mont-sur-Lausanne to Oissel | 321.79 mi (517.87 km) |
| Le Mont-sur-Lausanne to Olivet | 240.45 mi (386.97 km) |
| Le Mont-sur-Lausanne to Ollioules | 236.80 mi (381.09 km) |
| Le Mont-sur-Lausanne to Olonne-sur-Mer | 399.10 mi (642.28 km) |
| Le Mont-sur-Lausanne to Oloron-Sainte-Marie | 422.08 mi (679.27 km) |
| Le Mont-sur-Lausanne to Onet Village | 245.75 mi (395.50 km) |
| Le Mont-sur-Lausanne to Onnaing | 300.96 mi (484.35 km) |
| Le Mont-sur-Lausanne to Orange | 186.83 mi (300.67 km) |
| Le Mont-sur-Lausanne to Orchies | 313.90 mi (505.17 km) |
| Le Mont-sur-Lausanne to Orleans | 241.06 mi (387.94 km) |
| Le Mont-sur-Lausanne to Orly | 249.81 mi (402.04 km) |
| Le Mont-sur-Lausanne to Ormesson-sur-Marne | 246.28 mi (396.34 km) |
| Le Mont-sur-Lausanne to Orsay | 255.62 mi (411.38 km) |
