| Mount Vernon to Octeville | 3,424.00 mi (5,510.40 km) |
| Mount Vernon to Oignies | 3,597.28 mi (5,789.27 km) |
| Mount Vernon to Oissel | 3,546.10 mi (5,706.90 km) |
| Mount Vernon to Olivet | 3,618.06 mi (5,822.71 km) |
| Mount Vernon to Ollioules | 3,928.86 mi (6,322.88 km) |
| Mount Vernon to Olonne-sur-Mer | 3,492.17 mi (5,620.11 km) |
| Mount Vernon to Oloron-Sainte-Marie | 3,634.65 mi (5,849.41 km) |
| Mount Vernon to Onet Village | 3,745.78 mi (6,028.25 km) |
| Mount Vernon to Onnaing | 3,624.12 mi (5,832.45 km) |
| Mount Vernon to Orange | 3,851.41 mi (6,198.24 km) |
| Mount Vernon to Orchies | 3,607.42 mi (5,805.58 km) |
| Mount Vernon to Orleans | 3,617.41 mi (5,821.66 km) |
| Mount Vernon to Orly | 3,616.06 mi (5,819.48 km) |
| Mount Vernon to Ormesson-sur-Marne | 3,621.11 mi (5,827.62 km) |
| Mount Vernon to Orsay | 3,608.56 mi (5,807.42 km) |
