| Sofia to Oignies | 1,099.70 mi (1,769.80 km) |
| Sofia to Oissel | 1,155.94 mi (1,860.31 km) |
| Sofia to Olivet | 1,096.92 mi (1,765.33 km) |
| Sofia to Ollioules | 883.52 mi (1,421.89 km) |
| Sofia to Olonne-sur-Mer | 1,257.02 mi (2,022.98 km) |
| Sofia to Oloron-Sainte-Marie | 1,206.95 mi (1,942.40 km) |
| Sofia to Onet Village | 1,042.24 mi (1,677.33 km) |
| Sofia to Onnaing | 1,072.90 mi (1,726.67 km) |
| Sofia to Orange | 932.75 mi (1,501.12 km) |
| Sofia to Orchies | 1,089.59 mi (1,753.53 km) |
| Sofia to Orleans | 1,097.06 mi (1,765.54 km) |
| Sofia to Orly | 1,088.39 mi (1,751.60 km) |
| Sofia to Ormesson-sur-Marne | 1,082.73 mi (1,742.49 km) |
| Sofia to Orsay | 1,096.67 mi (1,764.91 km) |
| Sofia to Orthez | 1,212.96 mi (1,952.06 km) |
