| On Top of the World Designated Place to Octeville | 4,314.57 mi (6,943.63 km) |
| On Top of the World Designated Place to Oignies | 4,498.44 mi (7,239.54 km) |
| On Top of the World Designated Place to Oissel | 4,438.33 mi (7,142.80 km) |
| On Top of the World Designated Place to Olivet | 4,502.16 mi (7,245.53 km) |
| On Top of the World Designated Place to Ollioules | 4,788.61 mi (7,706.52 km) |
| On Top of the World Designated Place to Olonne-sur-Mer | 4,361.24 mi (7,018.75 km) |
| On Top of the World Designated Place to Oloron-Sainte-Marie | 4,480.14 mi (7,210.09 km) |
| On Top of the World Designated Place to Onet Village | 4,607.15 mi (7,414.49 km) |
| On Top of the World Designated Place to Onnaing | 4,525.55 mi (7,283.17 km) |
| On Top of the World Designated Place to Orange | 4,715.84 mi (7,589.41 km) |
| On Top of the World Designated Place to Orchies | 4,508.91 mi (7,256.38 km) |
| On Top of the World Designated Place to Orleans | 4,501.77 mi (7,244.90 km) |
| On Top of the World Designated Place to Orly | 4,506.40 mi (7,252.35 km) |
| On Top of the World Designated Place to Ormesson-sur-Marne | 4,511.92 mi (7,261.23 km) |
| On Top of the World Designated Place to Orsay | 4,498.33 mi (7,239.36 km) |
