| Security-Widefield to Octeville | 4,749.52 mi (7,643.61 km) |
| Security-Widefield to Oignies | 4,879.64 mi (7,853.03 km) |
| Security-Widefield to Oissel | 4,860.11 mi (7,821.59 km) |
| Security-Widefield to Olivet | 4,951.73 mi (7,969.04 km) |
| Security-Widefield to Ollioules | 5,307.32 mi (8,541.31 km) |
| Security-Widefield to Olonne-sur-Mer | 4,869.68 mi (7,836.99 km) |
| Security-Widefield to Oloron-Sainte-Marie | 5,054.32 mi (8,134.14 km) |
| Security-Widefield to Onet Village | 5,128.76 mi (8,253.94 km) |
| Security-Widefield to Onnaing | 4,904.02 mi (7,892.26 km) |
| Security-Widefield to Orange | 5,222.90 mi (8,405.44 km) |
| Security-Widefield to Orchies | 4,888.08 mi (7,866.60 km) |
| Security-Widefield to Orleans | 4,950.39 mi (7,966.88 km) |
| Security-Widefield to Orly | 4,932.01 mi (7,937.30 km) |
| Security-Widefield to Ormesson-sur-Marne | 4,935.43 mi (7,942.81 km) |
| Security-Widefield to Orsay | 4,926.60 mi (7,928.59 km) |
