| Middle Island to Octeville | 3,387.68 mi (5,451.94 km) |
| Middle Island to Oignies | 3,562.15 mi (5,732.73 km) |
| Middle Island to Oissel | 3,509.99 mi (5,648.78 km) |
| Middle Island to Olivet | 3,581.21 mi (5,763.40 km) |
| Middle Island to Ollioules | 3,890.21 mi (6,260.68 km) |
| Middle Island to Olonne-sur-Mer | 3,454.02 mi (5,558.71 km) |
| Middle Island to Oloron-Sainte-Marie | 3,594.96 mi (5,785.53 km) |
| Middle Island to Onet Village | 3,707.17 mi (5,966.11 km) |
| Middle Island to Onnaing | 3,589.02 mi (5,775.97 km) |
| Middle Island to Orange | 3,813.06 mi (6,136.53 km) |
| Middle Island to Orchies | 3,572.33 mi (5,749.11 km) |
| Middle Island to Orleans | 3,580.58 mi (5,762.38 km) |
| Middle Island to Orly | 3,579.79 mi (5,761.11 km) |
| Middle Island to Ormesson-sur-Marne | 3,584.89 mi (5,769.33 km) |
| Middle Island to Orsay | 3,572.23 mi (5,748.95 km) |
