| Ramnicu Valcea to Octeville | 1,250.15 mi (2,011.92 km) |
| Ramnicu Valcea to Oignies | 1,055.01 mi (1,697.87 km) |
| Ramnicu Valcea to Oissel | 1,126.11 mi (1,812.30 km) |
| Ramnicu Valcea to Olivet | 1,082.09 mi (1,741.45 km) |
| Ramnicu Valcea to Ollioules | 926.89 mi (1,491.68 km) |
| Ramnicu Valcea to Olonne-sur-Mer | 1,257.18 mi (2,023.24 km) |
| Ramnicu Valcea to Oloron-Sainte-Marie | 1,240.55 mi (1,996.47 km) |
| Ramnicu Valcea to Onet Village | 1,067.08 mi (1,717.30 km) |
| Ramnicu Valcea to Onnaing | 1,027.81 mi (1,654.10 km) |
| Ramnicu Valcea to Orange | 962.17 mi (1,548.46 km) |
| Ramnicu Valcea to Orchies | 1,044.33 mi (1,680.68 km) |
| Ramnicu Valcea to Orleans | 1,081.78 mi (1,740.96 km) |
| Ramnicu Valcea to Orly | 1,063.30 mi (1,711.21 km) |
| Ramnicu Valcea to Ormesson-sur-Marne | 1,056.98 mi (1,701.05 km) |
| Ramnicu Valcea to Orsay | 1,072.33 mi (1,725.75 km) |
