| Gardendale to Octeville | 4,291.29 mi (6,906.16 km) |
| Gardendale to Oignies | 4,461.28 mi (7,179.74 km) |
| Gardendale to Oissel | 4,412.85 mi (7,101.79 km) |
| Gardendale to Olivet | 4,486.37 mi (7,220.11 km) |
| Gardendale to Ollioules | 4,798.85 mi (7,723.00 km) |
| Gardendale to Olonne-sur-Mer | 4,362.03 mi (7,020.02 km) |
| Gardendale to Oloron-Sainte-Marie | 4,503.95 mi (7,248.42 km) |
| Gardendale to Onet Village | 4,615.77 mi (7,428.36 km) |
| Gardendale to Onnaing | 4,487.97 mi (7,222.68 km) |
| Gardendale to Orange | 4,721.35 mi (7,598.27 km) |
| Gardendale to Orchies | 4,471.28 mi (7,195.84 km) |
| Gardendale to Orleans | 4,485.67 mi (7,218.99 km) |
| Gardendale to Orly | 4,483.16 mi (7,214.94 km) |
| Gardendale to Ormesson-sur-Marne | 4,488.10 mi (7,222.90 km) |
| Gardendale to Orsay | 4,475.80 mi (7,203.10 km) |
