| North Decatur to Octeville | 4,178.49 mi (6,724.63 km) |
| North Decatur to Oignies | 4,351.87 mi (7,003.65 km) |
| North Decatur to Oissel | 4,300.69 mi (6,921.29 km) |
| North Decatur to Olivet | 4,372.14 mi (7,036.29 km) |
| North Decatur to Ollioules | 4,679.49 mi (7,530.92 km) |
| North Decatur to Olonne-sur-Mer | 4,244.15 mi (6,830.29 km) |
| North Decatur to Oloron-Sainte-Marie | 4,381.65 mi (7,051.58 km) |
| North Decatur to Onet Village | 4,496.56 mi (7,236.51 km) |
| North Decatur to Onnaing | 4,378.68 mi (7,046.81 km) |
| North Decatur to Orange | 4,602.87 mi (7,407.61 km) |
| North Decatur to Orchies | 4,361.99 mi (7,019.94 km) |
| North Decatur to Orleans | 4,371.51 mi (7,035.27 km) |
| North Decatur to Orly | 4,370.58 mi (7,033.76 km) |
| North Decatur to Ormesson-sur-Marne | 4,375.66 mi (7,041.94 km) |
| North Decatur to Orsay | 4,363.05 mi (7,021.65 km) |
