| Fort Dodge to Octeville | 4,174.36 mi (6,717.99 km) |
| Fort Dodge to Oignies | 4,314.46 mi (6,943.45 km) |
| Fort Dodge to Oissel | 4,288.05 mi (6,900.95 km) |
| Fort Dodge to Olivet | 4,376.20 mi (7,042.81 km) |
| Fort Dodge to Ollioules | 4,724.68 mi (7,603.64 km) |
| Fort Dodge to Olonne-sur-Mer | 4,285.07 mi (6,896.15 km) |
| Fort Dodge to Oloron-Sainte-Marie | 4,462.88 mi (7,182.31 km) |
| Fort Dodge to Onet Village | 4,544.39 mi (7,313.49 km) |
| Fort Dodge to Onnaing | 4,339.55 mi (6,983.83 km) |
| Fort Dodge to Orange | 4,641.23 mi (7,469.34 km) |
| Fort Dodge to Orchies | 4,323.33 mi (6,957.72 km) |
| Fort Dodge to Orleans | 4,374.99 mi (7,040.87 km) |
| Fort Dodge to Orly | 4,360.02 mi (7,016.78 km) |
| Fort Dodge to Ormesson-sur-Marne | 4,363.81 mi (7,022.87 km) |
| Fort Dodge to Orsay | 4,354.14 mi (7,007.30 km) |
