| National City to Octeville | 5,514.74 mi (8,875.11 km) |
| National City to Oignies | 5,631.82 mi (9,063.54 km) |
| National City to Oissel | 5,620.96 mi (9,046.07 km) |
| National City to Olivet | 5,716.52 mi (9,199.85 km) |
| National City to Ollioules | 6,079.87 mi (9,784.60 km) |
| National City to Olonne-sur-Mer | 5,646.24 mi (9,086.75 km) |
| National City to Oloron-Sainte-Marie | 5,839.09 mi (9,397.11 km) |
| National City to Onet Village | 5,904.16 mi (9,501.83 km) |
| National City to Onnaing | 5,655.17 mi (9,101.11 km) |
| National City to Orange | 5,994.47 mi (9,647.16 km) |
| National City to Orchies | 5,639.67 mi (9,076.17 km) |
| National City to Orleans | 5,715.02 mi (9,197.44 km) |
| National City to Orly | 5,692.43 mi (9,161.09 km) |
| National City to Ormesson-sur-Marne | 5,695.38 mi (9,165.82 km) |
| National City to Orsay | 5,687.63 mi (9,153.36 km) |
