| Upper Arlington to Octeville | 3,846.62 mi (6,190.53 km) |
| Upper Arlington to Oignies | 4,009.34 mi (6,452.41 km) |
| Upper Arlington to Oissel | 3,966.52 mi (6,383.50 km) |
| Upper Arlington to Olivet | 4,044.44 mi (6,508.89 km) |
| Upper Arlington to Ollioules | 4,369.13 mi (7,031.43 km) |
| Upper Arlington to Olonne-sur-Mer | 3,929.51 mi (6,323.94 km) |
| Upper Arlington to Oloron-Sainte-Marie | 4,083.89 mi (6,572.39 km) |
| Upper Arlington to Onet Village | 4,186.16 mi (6,736.97 km) |
| Upper Arlington to Onnaing | 4,035.72 mi (6,494.86 km) |
| Upper Arlington to Orange | 4,289.42 mi (6,903.16 km) |
| Upper Arlington to Orchies | 4,019.09 mi (6,468.10 km) |
| Upper Arlington to Orleans | 4,043.59 mi (6,507.53 km) |
| Upper Arlington to Orly | 4,037.57 mi (6,497.85 km) |
| Upper Arlington to Ormesson-sur-Marne | 4,042.22 mi (6,505.33 km) |
| Upper Arlington to Orsay | 4,030.59 mi (6,486.61 km) |
