| Rio de Mouro to Octeville | 840.32 mi (1,352.36 km) |
| Rio de Mouro to Oignies | 1,007.62 mi (1,621.61 km) |
| Rio de Mouro to Oissel | 893.49 mi (1,437.93 km) |
| Rio de Mouro to Olivet | 843.11 mi (1,356.86 km) |
| Rio de Mouro to Ollioules | 846.19 mi (1,361.80 km) |
| Rio de Mouro to Olonne-sur-Mer | 659.31 mi (1,061.06 km) |
| Rio de Mouro to Oloron-Sainte-Marie | 547.85 mi (881.68 km) |
| Rio de Mouro to Onet Village | 726.64 mi (1,169.42 km) |
| Rio de Mouro to Onnaing | 1,021.35 mi (1,643.71 km) |
| Rio de Mouro to Orange | 819.44 mi (1,318.76 km) |
| Rio de Mouro to Orchies | 1,015.23 mi (1,633.86 km) |
| Rio de Mouro to Orleans | 845.25 mi (1,360.30 km) |
| Rio de Mouro to Orly | 902.00 mi (1,451.62 km) |
| Rio de Mouro to Ormesson-sur-Marne | 908.72 mi (1,462.44 km) |
| Rio de Mouro to Orsay | 893.19 mi (1,437.46 km) |
