| Cleveland to Octeville | 3,727.34 mi (5,998.58 km) |
| Cleveland to Oignies | 3,888.77 mi (6,258.37 km) |
| Cleveland to Oissel | 3,846.91 mi (6,191.01 km) |
| Cleveland to Olivet | 3,925.58 mi (6,317.62 km) |
| Cleveland to Ollioules | 4,252.39 mi (6,843.56 km) |
| Cleveland to Olonne-sur-Mer | 3,812.45 mi (6,135.54 km) |
| Cleveland to Oloron-Sainte-Marie | 3,969.17 mi (6,387.76 km) |
| Cleveland to Onet Village | 4,069.52 mi (6,549.26 km) |
| Cleveland to Onnaing | 3,915.09 mi (6,300.74 km) |
| Cleveland to Orange | 4,172.31 mi (6,714.68 km) |
| Cleveland to Orchies | 3,898.48 mi (6,273.99 km) |
| Cleveland to Orleans | 3,924.71 mi (6,316.21 km) |
| Cleveland to Orly | 3,918.08 mi (6,305.53 km) |
| Cleveland to Ormesson-sur-Marne | 3,922.67 mi (6,312.93 km) |
| Cleveland to Orsay | 3,911.16 mi (6,294.40 km) |
