| Port Royal to Octeville | 4,092.52 mi (6,586.27 km) |
| Port Royal to Oignies | 4,273.32 mi (6,877.24 km) |
| Port Royal to Oissel | 4,215.89 mi (6,784.83 km) |
| Port Royal to Olivet | 4,282.23 mi (6,891.58 km) |
| Port Royal to Ollioules | 4,576.19 mi (7,364.66 km) |
| Port Royal to Olonne-sur-Mer | 4,145.56 mi (6,671.64 km) |
| Port Royal to Oloron-Sainte-Marie | 4,271.39 mi (6,874.13 km) |
| Port Royal to Onet Village | 4,394.02 mi (7,071.49 km) |
| Port Royal to Onnaing | 4,300.36 mi (6,920.77 km) |
| Port Royal to Orange | 4,501.96 mi (7,245.20 km) |
| Port Royal to Orchies | 4,283.69 mi (6,893.94 km) |
| Port Royal to Orleans | 4,281.76 mi (6,890.83 km) |
| Port Royal to Orly | 4,284.60 mi (6,895.39 km) |
| Port Royal to Ormesson-sur-Marne | 4,289.98 mi (6,904.06 km) |
| Port Royal to Orsay | 4,276.69 mi (6,882.68 km) |
