| Merzenich to Octeville | 370.30 mi (595.94 km) |
| Merzenich to Oignies | 156.73 mi (252.23 km) |
| Merzenich to Oissel | 261.81 mi (421.34 km) |
| Merzenich to Olivet | 291.88 mi (469.74 km) |
| Merzenich to Ollioules | 532.07 mi (856.28 km) |
| Merzenich to Olonne-sur-Mer | 480.36 mi (773.06 km) |
| Merzenich to Oloron-Sainte-Marie | 624.65 mi (1,005.28 km) |
| Merzenich to Onet Village | 482.36 mi (776.28 km) |
| Merzenich to Onnaing | 131.93 mi (212.32 km) |
| Merzenich to Orange | 468.96 mi (754.71 km) |
| Merzenich to Orchies | 145.83 mi (234.68 km) |
| Merzenich to Orleans | 289.69 mi (466.21 km) |
| Merzenich to Orly | 233.84 mi (376.33 km) |
| Merzenich to Ormesson-sur-Marne | 226.89 mi (365.15 km) |
| Merzenich to Orsay | 243.09 mi (391.22 km) |
