| Norwalk to Octeville | 5,479.30 mi (8,818.08 km) |
| Norwalk to Oignies | 5,591.96 mi (8,999.39 km) |
| Norwalk to Oissel | 5,583.90 mi (8,986.42 km) |
| Norwalk to Olivet | 5,680.70 mi (9,142.20 km) |
| Norwalk to Ollioules | 6,046.51 mi (9,730.91 km) |
| Norwalk to Olonne-sur-Mer | 5,614.96 mi (9,036.41 km) |
| Norwalk to Oloron-Sainte-Marie | 5,811.25 mi (9,352.30 km) |
| Norwalk to Onet Village | 5,872.13 mi (9,450.28 km) |
| Norwalk to Onnaing | 5,614.96 mi (9,036.41 km) |
| Norwalk to Orange | 5,960.82 mi (9,593.02 km) |
| Norwalk to Orchies | 5,599.62 mi (9,011.72 km) |
| Norwalk to Orleans | 5,679.14 mi (9,139.70 km) |
| Norwalk to Orly | 5,655.14 mi (9,101.07 km) |
| Norwalk to Ormesson-sur-Marne | 5,657.92 mi (9,105.55 km) |
| Norwalk to Orsay | 5,650.56 mi (9,093.69 km) |
