| Cay to Octeville | 1,772.64 mi (2,852.79 km) |
| Cay to Oignies | 1,591.99 mi (2,562.07 km) |
| Cay to Oissel | 1,648.82 mi (2,653.52 km) |
| Cay to Olivet | 1,587.91 mi (2,555.49 km) |
| Cay to Ollioules | 1,347.15 mi (2,168.03 km) |
| Cay to Olonne-sur-Mer | 1,742.49 mi (2,804.27 km) |
| Cay to Oloron-Sainte-Marie | 1,672.15 mi (2,691.07 km) |
| Cay to Onet Village | 1,516.46 mi (2,440.50 km) |
| Cay to Onnaing | 1,565.10 mi (2,518.79 km) |
| Cay to Orange | 1,405.74 mi (2,262.33 km) |
| Cay to Orchies | 1,581.79 mi (2,545.65 km) |
| Cay to Orleans | 1,588.13 mi (2,555.85 km) |
| Cay to Orly | 1,580.99 mi (2,544.35 km) |
| Cay to Ormesson-sur-Marne | 1,575.39 mi (2,535.35 km) |
| Cay to Orsay | 1,589.17 mi (2,557.52 km) |
