| Youngstown to Octeville | 3,700.92 mi (5,956.06 km) |
| Youngstown to Oignies | 3,864.66 mi (6,219.57 km) |
| Youngstown to Oissel | 3,821.04 mi (6,149.37 km) |
| Youngstown to Olivet | 3,898.48 mi (6,274.00 km) |
| Youngstown to Ollioules | 4,222.31 mi (6,795.15 km) |
| Youngstown to Olonne-sur-Mer | 3,782.80 mi (6,087.84 km) |
| Youngstown to Oloron-Sainte-Marie | 3,936.73 mi (6,335.56 km) |
| Youngstown to Onet Village | 4,039.32 mi (6,500.65 km) |
| Youngstown to Onnaing | 3,891.10 mi (6,262.12 km) |
| Youngstown to Orange | 4,142.72 mi (6,667.06 km) |
| Youngstown to Orchies | 3,874.46 mi (6,235.33 km) |
| Youngstown to Orleans | 3,897.65 mi (6,272.66 km) |
| Youngstown to Orly | 3,892.01 mi (6,263.59 km) |
| Youngstown to Ormesson-sur-Marne | 3,896.70 mi (6,271.13 km) |
| Youngstown to Orsay | 3,884.99 mi (6,252.28 km) |
