| Mettlach to Octeville | 369.25 mi (594.25 km) |
| Mettlach to Oignies | 173.75 mi (279.62 km) |
| Mettlach to Oissel | 247.64 mi (398.54 km) |
| Mettlach to Olivet | 241.93 mi (389.35 km) |
| Mettlach to Ollioules | 440.35 mi (708.68 km) |
| Mettlach to Olonne-sur-Mer | 437.11 mi (703.45 km) |
| Mettlach to Oloron-Sainte-Marie | 553.90 mi (891.41 km) |
| Mettlach to Onet Village | 401.27 mi (645.78 km) |
| Mettlach to Onnaing | 147.02 mi (236.61 km) |
| Mettlach to Orange | 379.39 mi (610.57 km) |
| Mettlach to Orchies | 163.70 mi (263.45 km) |
| Mettlach to Orleans | 240.29 mi (386.71 km) |
| Mettlach to Orly | 197.00 mi (317.04 km) |
| Mettlach to Ormesson-sur-Marne | 189.82 mi (305.48 km) |
| Mettlach to Orsay | 206.87 mi (332.93 km) |
