| Oregon to Octeville | 3,791.06 mi (6,101.12 km) |
| Oregon to Oignies | 3,949.58 mi (6,356.23 km) |
| Oregon to Oissel | 3,909.92 mi (6,292.40 km) |
| Oregon to Olivet | 3,990.05 mi (6,421.37 km) |
| Oregon to Ollioules | 4,320.31 mi (6,952.87 km) |
| Oregon to Olonne-sur-Mer | 3,879.98 mi (6,244.23 km) |
| Oregon to Oloron-Sainte-Marie | 4,039.90 mi (6,501.60 km) |
| Oregon to Onet Village | 4,137.64 mi (6,658.89 km) |
| Oregon to Onnaing | 3,975.76 mi (6,398.37 km) |
| Oregon to Orange | 4,239.67 mi (6,823.09 km) |
| Oregon to Orchies | 3,959.18 mi (6,371.68 km) |
| Oregon to Orleans | 3,989.13 mi (6,419.89 km) |
| Oregon to Orly | 3,981.28 mi (6,407.25 km) |
| Oregon to Ormesson-sur-Marne | 3,985.76 mi (6,414.46 km) |
| Oregon to Orsay | 3,974.51 mi (6,396.35 km) |
