| Council Bluffs to Octeville | 4,297.37 mi (6,915.94 km) |
| Council Bluffs to Oignies | 4,437.63 mi (7,141.68 km) |
| Council Bluffs to Oissel | 4,411.13 mi (7,099.03 km) |
| Council Bluffs to Olivet | 4,499.18 mi (7,240.72 km) |
| Council Bluffs to Ollioules | 4,847.28 mi (7,800.94 km) |
| Council Bluffs to Olonne-sur-Mer | 4,407.56 mi (7,093.29 km) |
| Council Bluffs to Oloron-Sainte-Marie | 4,584.67 mi (7,378.32 km) |
| Council Bluffs to Onet Village | 4,666.88 mi (7,510.62 km) |
| Council Bluffs to Onnaing | 4,462.73 mi (7,182.07 km) |
| Council Bluffs to Orange | 4,763.90 mi (7,666.75 km) |
| Council Bluffs to Orchies | 4,446.50 mi (7,155.96 km) |
| Council Bluffs to Orleans | 4,497.98 mi (7,238.79 km) |
| Council Bluffs to Orly | 4,483.11 mi (7,214.86 km) |
| Council Bluffs to Ormesson-sur-Marne | 4,486.90 mi (7,220.97 km) |
| Council Bluffs to Orsay | 4,477.21 mi (7,205.37 km) |
