| Fort Oglethorpe to Octeville | 4,166.59 mi (6,705.47 km) |
| Fort Oglethorpe to Oignies | 4,336.52 mi (6,978.96 km) |
| Fort Oglethorpe to Oissel | 4,288.12 mi (6,901.07 km) |
| Fort Oglethorpe to Olivet | 4,361.74 mi (7,019.54 km) |
| Fort Oglethorpe to Ollioules | 4,674.77 mi (7,523.32 km) |
| Fort Oglethorpe to Olonne-sur-Mer | 4,237.77 mi (6,820.03 km) |
| Fort Oglethorpe to Oloron-Sainte-Marie | 4,380.47 mi (7,049.68 km) |
| Fort Oglethorpe to Onet Village | 4,491.68 mi (7,228.67 km) |
| Fort Oglethorpe to Onnaing | 4,363.21 mi (7,021.91 km) |
| Fort Oglethorpe to Orange | 4,597.15 mi (7,398.39 km) |
| Fort Oglethorpe to Orchies | 4,346.53 mi (6,995.06 km) |
| Fort Oglethorpe to Orleans | 4,361.04 mi (7,018.42 km) |
| Fort Oglethorpe to Orly | 4,358.45 mi (7,014.24 km) |
| Fort Oglethorpe to Ormesson-sur-Marne | 4,363.39 mi (7,022.19 km) |
| Fort Oglethorpe to Orsay | 4,351.09 mi (7,002.41 km) |
