| Biddeford to Octeville | 3,181.64 mi (5,120.36 km) |
| Biddeford to Oignies | 3,353.12 mi (5,396.33 km) |
| Biddeford to Oissel | 3,303.36 mi (5,316.24 km) |
| Biddeford to Olivet | 3,376.62 mi (5,434.15 km) |
| Biddeford to Ollioules | 3,691.47 mi (5,940.85 km) |
| Biddeford to Olonne-sur-Mer | 3,253.63 mi (5,236.22 km) |
| Biddeford to Oloron-Sainte-Marie | 3,400.58 mi (5,472.70 km) |
| Biddeford to Onet Village | 3,508.35 mi (5,646.15 km) |
| Biddeford to Onnaing | 3,379.90 mi (5,439.42 km) |
| Biddeford to Orange | 3,613.25 mi (5,814.97 km) |
| Biddeford to Orchies | 3,363.21 mi (5,412.56 km) |
| Biddeford to Orleans | 3,375.92 mi (5,433.02 km) |
| Biddeford to Orly | 3,373.56 mi (5,429.23 km) |
| Biddeford to Ormesson-sur-Marne | 3,378.54 mi (5,437.24 km) |
| Biddeford to Orsay | 3,366.17 mi (5,417.33 km) |
