| Calafat to Octeville | 1,220.46 mi (1,964.14 km) |
| Calafat to Oignies | 1,033.97 mi (1,664.01 km) |
| Calafat to Oissel | 1,096.18 mi (1,764.14 km) |
| Calafat to Olivet | 1,043.25 mi (1,678.95 km) |
| Calafat to Ollioules | 857.12 mi (1,379.40 km) |
| Calafat to Olonne-sur-Mer | 1,210.46 mi (1,948.04 km) |
| Calafat to Oloron-Sainte-Marie | 1,176.50 mi (1,893.39 km) |
| Calafat to Onet Village | 1,006.86 mi (1,620.38 km) |
| Calafat to Onnaing | 1,006.94 mi (1,620.51 km) |
| Calafat to Orange | 899.26 mi (1,447.22 km) |
| Calafat to Orchies | 1,023.61 mi (1,647.35 km) |
| Calafat to Orleans | 1,043.20 mi (1,678.86 km) |
| Calafat to Orly | 1,030.37 mi (1,658.22 km) |
| Calafat to Ormesson-sur-Marne | 1,024.42 mi (1,648.64 km) |
| Calafat to Orsay | 1,038.98 mi (1,672.08 km) |
