| South Riding to Octeville | 3,663.12 mi (5,895.22 km) |
| South Riding to Oignies | 3,835.93 mi (6,173.33 km) |
| South Riding to Oissel | 3,785.16 mi (6,091.62 km) |
| South Riding to Olivet | 3,857.27 mi (6,207.68 km) |
| South Riding to Ollioules | 4,167.74 mi (6,707.32 km) |
| South Riding to Olonne-sur-Mer | 3,731.25 mi (6,004.87 km) |
| South Riding to Oloron-Sainte-Marie | 3,872.79 mi (6,232.65 km) |
| South Riding to Onet Village | 3,984.68 mi (6,412.72 km) |
| South Riding to Onnaing | 3,862.73 mi (6,216.47 km) |
| South Riding to Orange | 4,090.42 mi (6,582.90 km) |
| South Riding to Orchies | 3,846.04 mi (6,189.61 km) |
| South Riding to Orleans | 3,856.62 mi (6,206.62 km) |
| South Riding to Orly | 3,855.16 mi (6,204.28 km) |
| South Riding to Ormesson-sur-Marne | 3,860.20 mi (6,212.40 km) |
| South Riding to Orsay | 3,847.68 mi (6,192.24 km) |
